Class 6

Punjab State Board PSEB 6th Class Computer Book Solutions Chapter 5 MS Paint (Part-2) Textbook Exercise Questions and Answers.

PSEB Solutions for Class 6 Computer Science Chapter 5 MS Paint (Part-2)

Computer Guide for Class 6 PSEB MS Paint (Part-2) Textbook Questions and Answers

1. Fill in the Blanks

Question 1.
The clipboard menu has three options—Cut, Copy and …………..
(a) Paste
(b) Move
(c) Close
(d) Zoom
Answer:
(a) Paste

Question 2.
The top button, a diamond shape with a line through it is …………..
(a) Paste
(b) Cut
(c) Copy
(d) Crop.
Answer:
(d) Crop

Question 3.
The ………….. tool can be used to draw pentagon.
(a) Triangle
(b) Rectangle
(c) Pentagon
(d) Hexagon
Answer:
(c) Pentagon

Question 4.
The Eraser tool erase the part of a picture with the ………….. button of the mouse pressed.
(a) Left
(b) Right
(c) Scroll
(d) None of these.
Answer:
(a) Left

Question 5.
Color 2 is used if we press with the mouse button.
(a) Left
(b) Right
(c) Scroll
(d) None of these
Answer:
(b) Right.

2. Very Short Answer Type Questions

Question 1.
Which tool is used to draw a Square ?
Answer:
Rectangle tool.

Question 2.
Which tool can be used to erase a part of picture ?
Answer:
Eraser.

Question 3.
Which tool allows us for zoom-in our picture ?
Answer:
Zoom.

Question 4.
Which tool is used for free-hand writing ?
Answer:
Pencil.

Question 5.
Which tool can be used to write text in our drawing ?
Answer:
Text tool.

3. Short Answer Type Questions

Question 1.
What are the options available in the Clipboard Menu ?
Answer:
The options available in clipboard menu are : cut, copy and paste.

Question 2.
Write about Crop option.
Answer:
The Crop option is used to crop or cut a part of a picture. The crop button is a diamond shape with the line at the top type button. This button helps us to crop our picture to the selected area only.

Question 3.
Write the name of tools available in Tools Menu.
Answer:
Following tools are available in MS Paint tool menu :

1. Pencil
2. Filled with color
3. Text tool
4. Eraser
5. Color picker
6. The magnifier.

Question 4.
What is size tool ?
Answer:
The size tool allows the user to select the width of a brush or a shape. This tool is active only when a brush or shape is chosen. After selecting a brush or shape the user can shape the brush.

Question 5.
Write about brushes.
Answer:
Brushes are like order brushes. They give the same effect as the ordinary brushes give. There are different types of brushes available in MS Paint. The width of Brush can be changed with size tool.

Question 6.
Give the name of groups present there in the home tab ribbon.
Answer:
Calling groups are available in home tab ribbon :

1. Clipboard
2. Image
3. Tools
4. Brushes
5. Shapes
6. Size
7. Color.

4. Long Answer Type Questions

Question 1.
Explain the color tool of MS Paint.
Answer:
The Color section of the ribbon has three parts :

1. Boxes; showing the active colors-Color 1 and Color 2
2. The Color Palette
3. The Edit Colors button.

1. Color Box :
Color 1 : Color 1 is the Foreground Color and is always black when we open Paint.
Color 2 : Color 2 is the Background Color and is always white when we open Paint.

2. The Color Palette :
The two top lines of the Color Palette show all the colors available. Whenever we are making a picture. The line of blank squares at the bottom shows those colors we have edited during our work. Once Paint is closed, the edited colors vanish away.

3. Edit Colors :
The Edit Colors button takes us into the Edit Colors dialog box. We can click any color on an extended palette and click the Add to Custom Colors button.

Here only one color will be added to the squares under the palette. To add more colors, we must return to the dialog box and add them one at a time.

Question 2.
What is Text Tool ? How to Format the text ?
Answer:
The Text tool is used to insert any text :
To begin inserting text, click on the text tool. Our cursor will change to an insertion bar. With this cursor we can draw the required size of area for texts. We must not click anywhere outside that area until our text is final from all aspects. When we are using the Text Tool then the Text Toolbar starts appearing.

Formatting the Text :

1. Select the text we have typed.
2. Click the down arrow at the end of the Font Name box, so that a list of fonts drops down.
3. Run your cursor-without pressing any mouse buttons—up and down in the font list. As we do this, the appearance of the text we have typed will change accordingly. When we like what we see, click on the name of that font.
4. The font list will close.
5. We can repeat this process with the Font Size list also.
6. We can also click the Background from Transparent to Opaque or vice versa.
7. We can change both Color 1 and Color 2.

We can also type text in different colors, fonts and size, in the same text box. When we are making changes, only selected text will be affected. When we have completed editing of text, we can click anywhere outside of your text box. After clicking away from the text box, the Text Toolbar disappears and the text becomes part of our picture. Now, it cannot be edited in any way.

Activity

Name the following tools :

Answer:

1. Pencil
2. Fill with Color
3. Text
4. Eraser
5. Color Picker
6. Magnifier.

Name the following Shapes:

Answer:

1. Triangle
2. Rectangle
3. Oval
4. Pentagon
5. Hexagon
6. Diamond.

PSEB 6th Class Computer Guide MS Paint (Part-2) Important Questions and Answers

1. Fill in the Blanks

Question 1.
Home tab ribbon is below ………….
(a) Menu Bar
(b) Status Bar
(c) Work Area
(d) Scroll Bar.
Answer:
(a) Menu Bar

Question 2.
…………. is used to earse image
(a) Color
(b) Select
(c) Eraser
(d) Pencil.
Answer:
(c) Eraser

Question 3.
Crop button is of shape ………….
(a) Diamond
(b) Pentagon
(c) Square
(d) Rectangle
Answer:
(a) Diamond

Question 4.
Pentagon has ……………… sides.
(a) 3
(b) 4
(c) 5
(d) 6
Answer:
(c) 5

2. Very Short Answer Type Questions

Question 1.
What options are available in clipboard ?
Answer:
Cut, Copy and Paste.

Question 2.
What options are available in Selection ?
Answer:
Crop, Resize and Rotate Flip.

Question 3.
What do you mean by Fill with Colour ?
Answer:
A closed region can be filled with some colour using Fill with colour command.

3. Short Answer Type Questions

Question 1.
When we need free form selection ?
Answer:
Free form selection is used when we have to select a region without selecting shapes around this region.

Question 2.
Write about crop option ?
Answer:
The top most button in selection option is crop button. It is used to cut the image as per requirement.

Question 3.
What does Invert Colour option do ?
Answer:
Invert colour option helps to create white text in black coloured marks. With this the text look beautiful.

Question 4.
How does pencil tool work ?
Answer:
Pencil tool is used to draw free hand lines. It can also be used to edit text in zoomed position.

Question 5.
Write about magnifier tool.
Answer:
Magnifier tool is used to zoom in the picture. The picture can be view from near using this tool.

Question 6.
What is Home Tab Ribbon ?
Answer:
Home Tab Ribbon is main ribbon in MS Paint. It is available below the menu bar. It contains group clip board, images, tools, brushes, shapes, size and color.

Question 7.
What are the parts of Home Tab Ribbon ?
Answer:
The main parts of Home tab ribbon are clipboard, images, tools, brushes, size and color menu. . .

Question 8.
Name the tools available in Tools Menu.
Answer:
Following tools are available in tools menu:

• Pencil
• Fill with color
• Text tool
• Eraser
• Color Picker
• Magnifier
• Brushes.

Question 9.
What is size tool?
Answer;
Size tool is that tool which is used to change the size of brush.

Question 10.
What are brushes?
Answer:
Brushes are used to draw brush like effects in the drawing. They can be of varied width.

4. Long Answer Type Questions

Question 1.
Explain View Tab Ribbon ?
Answer:
The following section explains the View Tab Ribbon. It has three main options: Zoom, Show or hide and Display. Zooming in and out can be used alone or in conjunction with the Zoom Tool on the Ribbon or the slider on the Status Bar. Zoom in and Zoom out tools can be clicked repeatedly to get a closer or more distant view. The 100% option brings us back to normal view of the picture.

Zoom:
Zooming in and out can be used alone or in conjunction with the Zoom Tool on the Ribbon or the slider on the Status Bar. Zoom in and Zoom out tools can be clicked repeatedly to get a closer or more distant view. The 100% option brings us back to normal view of the picture.

Show or Hide:
This portion of the View Tab Ribbon includes:

• The Show or Hide option for the status bar. The status bar is very useful while drawing pictures precisely.
• Gridlines are convenient if we want to align shapes accurately.
• Rulers can be turned on or off as per our requirement.

Display:
On the Display section, we can click for Full Screen View. We can also get a Full Screen View by hitting F11. We can come back to a normal view by pressing the Esc key.

• Thumbnail is active only when we are zoomed in. It helps us seeing how changes, we have made are affecting our picture in normal view.

Question 2.
Explain color section on Home Tab Ribbon.
Answer:
The Color section of the ribbon has three parts: Boxes; showing the active colors-Color 1 and Color2, the Color Palette and the Edit Colors button

The Color Boxes:

Color 1 is the Foreground Color and is always black when we open Paint.
Color 2 is the Background Color and is always white when we open Paint.

The Color Palette : The two top lines of the Color Palette show all the colors available whenever we are making a picture. The line of blank squares at the bottom shows those colors, we have edited during our work. Once Paint is closed, the edited colors vanish away.

Edit Colors :
The Edit Colors button takes us into the Edit Colors dialogue box

The Edit Colors dialogue box is shown in figure below:

Here we can click any color on an extended palette and click the Add to Custom Colors button. Here only one color will be added to the squares under the palette. To add more colors, we must return to the dialogue box and add them one at a time.

Question 3.
Write about resize and skew options.
Answer:
Resize and Skew :
The second small button to the right of the large Select button will open the Resize and Skew dialogue as shown in figure below.

Resize :
We can quickly resize a selection by dragging any of the little blocks-or handles-on the selection rectangle. However, if we want the size adjustment to be precise, we must use the Resize and Skew dialogue box. When we click the Resize icon, the dialog box appears as shown in figure below.

Only the top half of this dialogue is concerned with resizing

Note : While the option Maintain aspect ratio is checked, whatever we type into the Horizontal slot will be repeated in Vertical and our selection will stay exactly in proportion. We can remove the check if we want the selection to be fatter or thinner.

Skew : The bottom part of the Resize and Skew dialogue box allow us to skew our selection. When we use this option, it makes our selection include a lot of border area to avoid having part of the picture cut off. If this does happen, click Undo and make a wider selection before trying again.

This blue box is skewed 20 degrees horizontally. We can skew a selection both horizontally and vertically

Question 4.
Explain Shapes in detail.
Answer:
In the Shapes Gallery several tools like Rectangles, Rounded Rectangles Ellipses and Freehand Polygons, the Line Tool and the Curved Line Tool can be seen. There are number of other shapes such as arrows, speech balloons, various stars and others are also included.

We can open the Shapes Gallery by clicking the down arrow under the Shapes picture and click the shape we want to draw,

1. Straight Lines : Straight lines can be drawn while the left mouse button is pressed and will usç Color 1. these drawn with the right button will use Color 2. Line wifl be perfectly straight, If we hold down the Shift key while drawing a line. Ellipses, Rectangles, Circles and Squares If we want to draw an exact shape such as a square or a circle, hold the Shift key while we draw.

2. Curved Lines : Click the Curved Line button to draw a curve. Click the Outline button and choose Solid Color or a texture of your choice. Then click under the Size picture and choose a line thickness.

Ellipses, Rectangles, Circles and Squares : If we want to draw an exact shape such as a square or a circle, hold the Shift key while we draw.

Freehand Polygons : To draw a freehand polygon, click the Polygon button in the gallery. Hold a mouse button down and draw the first line of the polygon. Then release your mouse button and click where you want the next line to end. Keep clicking end points until you want the last line to finish the shape, then double click

Punjab State Board PSEB 6th Class Computer Book Solutions Chapter 4 Introduction To Ms Paint Textbook Exercise Questions and Answers.

PSEB Solutions for Class 6 Computer Science Chapter 4 Introduction to MS Paint

Computer Guide for Class 6 PSEB Introduction to MS Paint Textbook Questions and Answers

1. Fill in the Blanks

Question 1.
The bar is present at the top of the paint window.
(a) Title Bar
(b) Status Bar
(c) Scroll Bar
(d) Task Bar
Answer:
(a) Title bar

Question 2.
toolbar present in title bar by default. Its position can be changed either to below or above the ribbon.
(a) Quick access bar
(b) Status Bar
(c) Scroll Bar
(d) All of these
Answer:
(a) Quick access bar

Question 3.
The first on the left of the Menu Bar is the …………. Button.
(a) Paint
(b) Help
(c) Close
(d) Minimize
Answer:
(a) Paint

Question 4.
Scroll Bar is used to move the screen. It is of ………….. types.
(a) 2
(b) 3
(c) 4
(d) 5
Answer:
(a) 2

Question 5.
With the help of option we can Save a Copy of picture with another file name.
(a) Save as
(b) Open
(c) New
(d) Exit.
Answer:
(a) Save as

2. Write the Shortcut Keys for following

1. To create a NEW file ……………………
2. To OPEN an existing file ……………………
3. To SAVE a file ……………………
4. To PRINT a file ……………………
5. UNDO ……………………
6. REDO or REPEAT ……………………

Answer:

1. Control + N
2. Control + O
3. Control + S
4. Control + P
5. Control + Z
6. Control + Y.

3. Short Answer Type Questions

Question 1.
What is paint?
Answer:
Paint is an application software developed by Microsoft. It is used to draw paintings and shapes especially by children. It is provided free of cost by Microsoft with Microsoft Windows.

Question 2.
How to start the MS Paint?
Answer:
Paint can be started by clicking on the start button and then going to programs -> accessories and then clicking Microsoft paint.

Question 3.
Write the names of parts of windows of paint.
Answer:
The different parts of paint window are :

1. Title bar
2. Menu bar
3. Ribbon
4. Quick access bar
5. Work area
6. Scroll bar.

Question 4.
What is work area?
Answer:
Work area is a white area in the middle of the paint window. This area is used for drawing purposes. All the drawing work and shapes are drawn in this area. Whatever is placed in this area can be saved in an image file.

Question 5.
Explain the use of Save Command.
Answer:
The save command is used to save the drawing prepared by the user. It saves the drawing as an image file in various formats.

Question 6.
What are the types of scroll bars ?
Answer:
There are two types of scroll bars:

• Horizontal scroll bar
• Vertical scroll bar.

4. Long Answer Type Questions

Question 1.
What is Quick Access Toolbar? Explain its parts.
Answer:
Quick access toolbar is a toolbar present in the title bar of the paint window. By default this bar contains save undo, redo and customise quick access bar commands. This command can be changed as per requirement. This bar can also be moved from the title bar to below the ribbon. To move the quick access toolbar below the ribbon, the customise quick access toolbar button is clicked. After clicking the button the command shown below the Ribbon is clicked , to display the quick access bar below the ribbon. The user can also click on the various commands given in this menu to display them on the quick access toolbar.

Question 2.
Define Home Tab Ribbon.
Answer:
Home Tab Ribbon :
All tools, shapes, colour palette and most of the commands are grouped together in the ribbon except Save, Undo and Redo commands which are shown at title bar or in the Quick Access Toolbar. Drop down arrows below each item in the ribbon will give us other options for the tool. Most of the tools used for drawing or other tasks are present in Home Tab Ribbon. There is also an option to minimize the ribbon. If we choose this, the ribbon disappears entirely, but pops into view if you click on the Home tab.

Activity

Let’s revise what we have studied. Write the name of Parts of Microsoft Paint Window.

Answer:

PSEB 6th Class Computer Guide Introduction to MS Paint Important Questions and Answers

1. Fill in the Blanks

Question 1.
Scroll bar is of ………… types
(a) 1
(b) 2
(c) 3
(d) 4.
Answer:
(b) 2

Question 2.
Drawing is made in ………….
(a) Ribbon
(b) Tab
(c) Work Area
(d) Title bar.
Answer:
(c) Work Area

Question 3.
………….. is at the top of Paint Window.
(a) Status bar
(b) Title bar
(c) Menu bar
(d) Ribbon.
Answer:
(b) Title bar

Question 4.
Commands are in …………… button.
(a) Minimize
(b) Paint
(c) Close
(d) Status bar.
Answer:
(b) Paint

2. Write the Full Forms

1. For Help
2. Close Paint.
Answer:
1. F1
2. Alt + F4.

3. Short Answer Type Questions

Question 1.
What is Quick Access Toolbar?
Answer:
Quick access toolbar is that toolbar which contains most frequently used commands.

Question 2.
Which option is used to remove commands from quick access toolbar?
Answer:
Remove from Quick Access Toolbar.

Question 3.
What is paint button?
Answer:
The button which is on left side of File Menu is called Paint button. It contains various commands.

Question 4.
For what purpose scroll bar is used?
Answer:
Scroll bar is used to scroll the work area in Paint window.

4. Long Answer Type Questions

Question 1.
What is Paint button ? Explain Commands in it.
Answer:
Paint Button :
This Button appeared at the beginning of Menu bar. When we click on this button and the following Menu Appears.

Here we can see some new commands which are discussed in table shown below:

Question 2.
What is status bar ? Explain its parts.
Answer:
The Status Bar is present at the bottom of the Paint Window. It gives information and current status of our drawing. We’ll look at its features from left to right.

Cursor Position : It gives the Cursor Position, which is helpful when we want to position any picture precisely

Selection Size : It shows the size of a selection we are making or size of an object we are drawing.

Image Size : It shows the size of our entire picture, even if the picture is very large and is not visible completely in the window. If we have not changed the units in the Properties dialogue box, the measurement will be displayed in pixels. We can change the measurement to inches or centimetres.

Disk Size : Once we have saved our picture, this option will show the size or drawingon Disk. If paint window is very small, this figure might not be shown.

Zoom Slider : The Zoom Slider is convenient if we are working in a zoomed-in view and want to zoom out. However, we cannot zoom in on a particular spot, as we can do with the Magnifier

Question 3.
How the work is saved in Paint ?
Answer:
It is good to save our picture as soon as we begin to work. We must click on the Save button on the Quick Access Toolbar every few minutes. This prevents loss of work if the program closes unexpectedly, as in a power failure. When we click the Save for the first time, we will find a dialogue box where we have to type a name for the picture. Type a desired name in the file name text box and click the Save button.

Save as:
With the help of Save as option we can Save a Copy of picture with another file name. Go to the Paint button and open the menu.

Click Save as

In the dialogue box, just change the existing name then click the Save button.

Punjab State Board PSEB 6th Class Computer Book Solutions Chapter 3 Basics of Working with Computers Textbook Exercise Questions and Answers.

PSEB Solutions for Class 6 Computer Science Chapter 3 Basics Of Working With Computers

Computer Guide for Class 6 PSEB Basics Of Working With Computers Textbook Questions and Answers

1. Fill in the Blanks

Question 1.
Screen appeared after login of Computer is called:
(a) Start Menu
(b) Desktop
(c) Taskbar
(d) None of these.
Answer:
(b) Desktop

Question 2.
All the Deleted files go to?
(a) My Computer
(b) Network
(c) Recycle bin
(d) All of above.
Answer:
(c) Recycle bin

Question 3.
Which part of window remains visible all the time when we use other applications?
(a) Recycle bin
(b) Desktop
(c) Taskbar
(d) None of these.
Answer:
(c) Taskbar

Question 4.
Which one is an example of Operating System?
(a) Windows
(b) Android.
(c) DOS
(d) Ail of above.
Answer:
(d) All of adove

Question 5.
To open a file we can double click on:
(a) File itself
(b) Shortcut of file
(c) Both (a) and (b)
(d) None of these.
Answer:
(c) Both (a) and (b).

2. Short Answer Type Questions

Question 1.
Write the name of any three window applications.
Answer:
The three window based applications are:

1. Notepad
2. Wordpad
3. Calculator.

Question 2.
Write the name of any three Icons.
Answer:
The names of three icons are:

1. My computer
2. Network
3. Recycle Bin

Question 3.
Write the names of components of a Desktop.
Answer:
The Components of Desktop are icon, taskbar and wallpaper.

Question 4.
What is Desktop?
Answer:
Desktop is a screen which is displayed on the monitor after the user logs in to the computer. It is just like the dashboard of the computer. It may contain an icon on Taskbar and wallpaper.

3. Long Answer Type Questions

Question 1.
What is Operating System? Explain different types of Operating Systems.
Answer:
Operating system is a system software without which a computer cannot work. IT acts as an interface between the hardware and the user. Each computer has an operating system installed on it. Operating system is displayed in the form of screens, menus, dialogue box, icons and widgets etc.

Definition of Operating System:
An Operating System is an interface between a computer user and computer hardware. It makes computer hardware work by controlling all the internal processes of the computer. There are many types of operating system. Each operating system is developed for different types of machines. Each operating system has a different set of commands and it understands the machine architecture very well.

1. Windows:
Windows is an operating system developed by Microsoft. It. is a graphical user interface. It means it is easy to work with pointing devices such as mice in windows. Most of the computers in this world are using windows operating systems. Everything is displayed in a rectangular frame on the screen in this operating system. That is by which operating system is named as windows. It is the most popular operating system in the world.

2. DOS:
DOS stands for Disc Operating System. This operating system is also developed by Microsoft. It is a character user interface operating system. This operating system is not very powerful. The user types commands to instruct the computer. This operating system was used on computers with small memory and low speed hardware. The user has to remember a lot of commands to work in it. That is why it was difficult to work in this operating system. Also the user cannot do a variety of work simultaneously in this operating system.

3. Android:
The Android operating system is one of the latest operating systems in digital word. It is the operating system which is used in mobile phones. This operating system was developed by Google. This operating system is developed for devices which have touchscreen in them. It provides a very beautiful and convenient interface which can be used by finger touch. The user can do the tasks like pinching, swiping and typing. Now the Android operating system is also used in televisions, cars, wrist watches and many other digital devices. Each of these devices have different user interfaces.

Question 2.
What is a Taskbar ? Explain the functions of its parts.
Answer:
Taskbar is located at the bottom of the screen. This bar is a part of the Operating System. It allows us to start a program using the Start menu. This bar always remains visible during working in any application. We can navigate through Active programs using the taskbar. The area on the right side of the taskbar is called “Notification Area”. This area allows us to check date and time, items running in the background etc.

The taskbar was first introduced with Microsoft Windows 95 and is found in all subsequent versions of Windows. We can have a look of taskbar and its all parts as under :

All these parts of the taskbar are having their own functions. Let’s discuss the use of each one of them. It. has a logo of windows on it. It is the first item on Taskbar. Its icon is :

• Start Button : We can start any application and program with the help of the Start button.
• Quick Launch Bar : This section of the taskbar enables us to launch programs without locating them from the Start menu. It is located next to the Start button.
• System Tray : It is located at the right side of Taskbar. It contains miniature icons for easy access to system functions such as fax, printer, modem, volume etc.
• Notification Area : This area is a part of the taskbar that provides notifications and status of devices. It can also be used to display icons for system and program features that are not on the desktop.
• Clock : At the end of taskbar, Clock is displayed where Current Time and Date can be seen. We can change Time and Date by clicking on it. It requires Administration access to change the Time or Date.
• Active Programs : This area of taskbar is between quick access bar and System Tray area. In this area of taskbar, all the active programs appeared as an icon and we can easily navigate among them.

Question 3.
What do you mean by Icon ? Explain any three Desktop Icons.
Answer:
Icons are the small pictures on the desktop. These icons represent a file or a program or folder on the computer. The user has to click on this icon to open.dat file or program. The following types of icons are available on Windows desktop.

1. My Computer:
This icon is used to assess the hard disc of the computer. This icon opens a window on the computer screen which displays all the hard disks attached to the computer and other removable media such as pen drives or CDs. The user can work in this window, no

2. Network:
This icon is used to connect to the network location attached to this computer system. This icon is used when the computer is connected to a local area. This icon displays icons of all the computer systems which are connected to users’ computers through Local area networks. The user can go to the other computer and work on files.

3. Recycle Bin:
Recycle Bin is a folder which works like a dustbin. In this folder contains all the deleted files folder icons on the computer. When anything is not required on the computer system the user can delete that item. That item is shifted to the recycle bin folder. If the user deletes an item accidentally he can restore that item from the recycle bin.

Question 4.
Explain the different options of shutting down a Computer System. ’
Answer:
Windows provide following shutting down options:
1. Sleep:
Sleep means letting the computer system to sleep without shutting it down. This option menu can be used when we want to leave a computer for some time. During this mode, the power of Monitor/LCD gets OFF and all your data is kept safe. When we put a computer into sleep mode then its power remains ON and its power light starts blinking. This blinking Red-Colour LED on the CPU shows that the computer is in sleep Mode. We can press the power button to resume the computer from this mode.

2. Shut Down:
Shut down means stopping all the processes which the computer is running.This option of Power menu can be used when we have finished all our work. When we shut-down a computer, all parts of computer systems are turned off and no power remains active in the Computer System. We can switch off the main power-supply of the computer when it is shut down. This process can take some time and we must wait till it is over. This process may take time according to the size of data being used and number of programs currently running.

3. Log Off:
Logging off means the process of disconnecting the current user from working and taking the user to the login screen. Windows 7 allows us to access a computer differently among users. We can keep our data secure from other users with the help of user accounts in it. If we have finished our work and want to leave a computer but another user is there to access the same computer for own work in a different user account then we can use the Log-off option of Power Menu.

4. Restart:
Restart means shutting down the computer and then starting it again by the computer itself. This option of power menu can be used when any new program is installed or any updation in the system is done. Sometimes when a new device or hardware is attached to the computer, it is required to restart our computer. In such a case, we can use the restart option of the Power menu to shut down our computer and start it again. When the restart button is pressed then the computer automatically gets started after being shut-down.

Activity
Name the Following Icons:

Answer:

1. Notepad
2. MS Paint
3. Calculator
4. My Computer
5. Network
6. Recycle bin
7. Start button.

PSEB 6th Class Computer Guide Basics of Working with Computers Important Questions and Answers

1. Fill in the Blanks

Question 1.
The Primary screen (first to open) of computer is called
(a) My Network
(b) Icon
(c) Desktop
(d) Recycle Bin.
Answer:
(c) Desktop

Question 2.
The bar lying at the bottom of the desktop is called
(a) Title Bar
(b) Status Bar
(c) Task Bar
(d) Scroll Bar.
Answer:
(c) Task Bar

Question 3.
The bar present at the top of the window is called
(a) Title Bar
(b) Status Bar
(c) Task Bar
(d) Scroll Bar.
Answer:
(a) Title Bar

Question 4.
Deleted files go to
(a) My Network
(b) My Documents
(c) My Computer
(d) Recycle Bin.
Answer:
(d) Recycle Bin

Question 5.
button is used to close the window.
(a) Minimize
(b) Maximize
(c) Close
(d) Start.
Answer:
(c) Close.

2. Short Answer Type Questions

Question 1.
What is operating system ?
Answer:
Operating system is an interface between user and computer.

Question 2.
What is windows ?
Answer:
Windows is an operating system of Microsoft company.

Question 3.
What is Windows Desktop ?
Answer:
The basic screen of computer is called desktop. It is seen after booting of windows. All the programs in windows are run with the help of desktop. The on-screen work area on which windows, icons, menus, and dialog boxes appear.

Question 4.
What are Icons ? Name any three types of Icons.
Answer:
A small image displayed on the screen to represent an object that can be manipulated by the user. Icons serve as visual mnemonics and allow the user to control certain computer actions without having to remember commands or type them at the keyboard.

Three Types if Icons are:

• My Computer
• My Document
• Recycle Bin

Question 5.
Name different components of windows.
Answer:

1. Title Bar
2. Menu Bar
3. Scroll Bar
4. Minimize Button
5. Maximize Button
6. Close Button.

Question 6.
Write down about Show Desktop button on Taskbar.
Answer:
Desktop is the first screen displayed when you start your computer. Icons, menus, dialog boxes, start button and taskbar are the part of desktop screen.

Long Answer Type Questions

Question 1.
Explain Taskbar.
Answer:
Taskbar is located at the bottom of the screen. This bar is a part of the Operating System. It allows us to start a program using the Start menu. This bar always remains visible during working in any application. We can navigate through Active programs using the taskbar. The area on the right side of the taskbar is called “Notification Area”. This area allows us to check date and time, items running in the background etc.

The taskbar was first introduced with Microsoft Windows 95 and is found in all subsequent versions of Windows. We can have a look of taskbar and it’s all parts as under:

All these parts of the taskbar are having their own functions. Let’s discuss the use of each one of them. It has a logo of windows on it. It is the first item on Taskbar. Its icon is :

(i) Start Button : We can start any application and program with the help of the Start button.

(ii) Quick Launch Bar : This section of the taskbar enables us to launch
programs without locating them from the Start menu. It is located next to the Start button. –

(iii) System Tray : It is located at the right side of Taskbar. It contains miniature icons for easy access to system functions such as fax, printer,
modem, volume etc.

(iv) Notification Area : This area is a part of the taskbar that provides notifications and status of devices. It can also be used to display icons for system and program features that are not on the desktop.

(v) Clock : At the end of taskbar, Clock is displayed where Current Time and Date can be seen. We can change Time and Date by clicking on it. It requires Administration access to change the Time or Date.

(vi) Active Programs : This area of taskbar is between quick access bar and System Tray area. In this area of taskbar, all the active programs appeared as an icon and we can easily navigate among them.

Question 2.
What do you mean by Recycle Bin ?
Answer:
Icons are the small pictures on the desktop. These icons represent a file or a program or folder on the computer. The user has to click on this icon to open.dat file or program. The following types of icons are available on Windows desktop.

1. My Computer : This icon is used to assess the hard disc of the computer. This icon opens a window on the computer screen which displays all the hard disks attached to the computer and other removable media such as pen drives or CDs. The user can work in this window.

2. Network : This icon is used to connect to the network location attached to this computer system. This icon is used when the computer is connected to a local area. This icon displays icons of all the computer systems which are connected to users’ computers through Local area networks. The user can go to the other computer and work on files.

3. Recycle Bin : Recycle Bin is a folder which works like a dustbin. In this folder contains all the deleted files, folder, icons on the computer. When anything is not required on the computer system the user can delete that item. That item is shifted to the recycle bin folder. If the user deletes an item accidentally he can restore that item from the recycle bin.

4. Users File : This icon is used to assess the current user data. Thus it can hold all the default locations for the different types of files. It may include my documents, my pictures, my videos desktop etc. The name of this icon changes as per the user logged in.

Punjab State Board PSEB 6th Class Computer Book Solutions Chapter 2 Computer Components Textbook Exercise Questions and Answers.

PSEB Solutions for Class 6 Computer Science Chapter 2 Computer Components

Computer Guide for Class 6 PSEB Computer Components Textbook Questions and Answers

1. Fill in the Blanks

Question 1.
Which part of the computer system accepts input from the user?
(a) Input Unit
(b) Output Unit
(c) Control Unit
(d) None of these
Answer:
(a) Input Unit

Question 2.
Which is a part of the CPU?
(a) Control Unit
(b) Memory Unit
(c) ALU
(d) All of above
Answer:
(d) All of above

Question 3.
Which memory stores permanent data in computer system ?
(a) Primary Memory
(b) RAM
(c) Secondary Memory
(d) All of above.
Answer:
(c) Secondary Memory

Question 4.
Which is a most powerful type of computer ?
(a) Mainframe Computer
(b) Mini Computer
(c) Micro Computer
(d) Super Computer.
Answer:
(d) Super Computer

Question 5.
Which part of computer system gives result as an output to the user ? ‘
(a) Memory
(b) Input Unit
(c) Control Unit
(d) Output Unit.
Answer:
(d) Output Unit.

2. Write the Full Forms

Question 1.
ALU?
Answer:
ALU – Arithmetic and LgicaI Unit.

Question 2.
CPU?
Answer:
CPU – Central Processing Unit

Question 3.
LCD?
Answer:
LCD – liquid Crystal Display

Question 4.
RAM?
Answer:
RAM – Randoni Access Memory

Question 5.
ROM?
Answer:
ROM – Read Only Memory

Question 6.
CU?
Answer:
CU – Central Unit

Question 7.
MU?
Answer:
MU – Memory Unit

Question 8.
IPO?
Answer:
IPO – Input Processing Output.

3. Short Answer Type Questions

Question 1.
Write the name of parts of CPU.
Answer:
The names of three parts of CPU are :

• Input Unit
• Processing Unit
• Output Unit.

Question 2.
What are the types of memories ?
Answer:
The types of memories are :

1. Primary Memory
2. Secondary Memory

Question 3.
What are Secondary Storage Devices ?
Answer:
Secondary storage devices are the devices which are not directly accessible by CPU. These are used to store the data and instructions for a long time. These devices are magnetic and optical in nature. The storage capacity of these devices is more than primary memory. They have less cost and speed than primary memory.

Question 4.
What is the function of ALU ?
Answer:
The functions of ALU are to perform arithmetic and logical units. All the calculations are done by this part of the CPU. This part is also responsible for making comparisons.

Question 5.
What is Micro-Computer?
Answer:
Micro computers are used computers which use microprocessors as CPU. Micro or personal computers are the most common computers. These are the computers which are used in homes, schools and offices. These computers are small in size and the cost of this computer is very less.

Question 6.
What are different categories of Computers ?
Answer:
The different categories of computers are:

1. Microcomputer
2. Mini Computer
3. Mainframe Computer
4. Supercomputer

4. Long Answer Type Questions

Question 1.
What do you mean by Block Diagram of Computer ? Define its Components.
Answer:
Block Diagram of Computer is a Graphical representation of various steps involved in working of computers. The main parts shown in this block diagram are Input Unit, Processing Unit and Output Unit. The Processing Unit is divided into three parts namely Memory Unit, Control Unit and Arithmetic Logic Unit.
The Central Processing Unit of a computer system is divided into three parts.

1. Memory Unit
2. Control Unit
3. Arithmetic and Logical Unit

1. Memory Unit:
This unit is also known as storage unit. This unit holds the data and instruction in it. It can store data and instruction temporary and permanently. Many types of memories are used in this unit for special purposes. These memories vary in size, storage capacity, nature of operation, speed and cost.

2. Control Unit:
Control Unit is meant for controlling all the activities of the computer. This unit works as the brain of a computer. It performs all the operations given in the form of instructions. It also controls the functioning of other components of the computer. It controls both input and output units also.

3. Arithmetic and Logical Unit:
This is the third part of the Central Processing Unit. This unit is related to performing all the arithmetic and logical operations. A lot of calculations are done by computer in each type of work. All these calculations are done by this unit of CPU. Part of Central Processing Unit is integrated within the processor.

Question 2.
How Computer Works ? Explain each term in detail.
Answer:
The process of processing the data is called the processing cycle of a computer. It is the way of processing within a computer system. Three Steps are Involved in this cycle.

1. Input:
This part is related with input of data and instruction. Computers cannot work without proper input. To enter the necessary data and instructions in the computer input unit is required. Man can enter the data and instruction in its own language and that is converted into computer languages by this input unit. There are many types of input devices used for input. Keyboard is the most common input device used to enter textual data. The second common device for input is the mouse. This device is used to point a special part on the screen or to select a command with mouse pointer. The Other common devices which are used for input are microphone, touch screen, scanner etc.

2. Processing :
Processing is the process of acting according to given instructions. This is the main task done by computer as it gets instructions from the computer. The main aim of Computer is to work as per the given instructions. This task is done by the processor of the computer. The processor is just like the brain of a human being. This processor is also known as the Central Processing Unit.

3. Output :
After processing, the data is converted into some information. The user of the computer needs that information from the computer as its result. This result is shown to the user using output devices. The most common output device is a monitor. The other output devices are speaker, printer and plotters.

Activity

Write the given Items in their respective Category :

1. RAM
2. Keyboard
3. Mouse
4. ROM
5. Hard Disk Drive
6. Printer
7. Microphone
8. Speaker
9. USB Pen Drive
10. Monitor/LCD.

Answer:

PSEB 6th Class Computer Guide Computer Components Important Questions and Answers

1. Fill in the Blanks

Question 1.
…………… is the process of entering data and instructions to the computer.
(a) Input Devices
(b) Output Devices
(c) CPU
(d) None of these.
Answer:
(a) Input Devices

Question 2.
The process of saving data and instructions permanently is known as ……………….
(a) Memory
(b) Storage
(c) Processing
(d) Output.
Answer:
(a) Memory

Question 3.
The process of producing results from the data for getting useful information is called ………………
(a) Input
(b) Output
(c) Processing
(d) None of these.
Answer:
(c) Processing

Question 4.
Primary storage is also known as …………….. Memory.
(a) Secondary
(b) Main
(c) Auxiliary
(d) All of these.
Answer:
(b) Main

Question 5.
Secondary storage is also called ……………. storage.
(a) Secondary
(b) Main
(c) Auxiliary
(d) All of these.
Answer:
(c) Auxiliary.

2. Write the Full Forms
1. I/O
2. IPO
Answer.
1. I/O – input/Output
2. IPO – input Processing Output

3. Short Answer Type Questions

Question 1.
Draw the diagram of basic functions of a Computer.
Answer:
The five important functions/operations performed by computer are :

1. Take Input: Computer receives data and instructions from user.
2. Save : Computer save the information.
3. Processing : Computer processes the data.
4. Output: Computer gives output after processing.
5. Control: Computer controls different parts and all operations.

Question 2.
Name the parts of CPU Unit.
Answer:
The three parts of CPU Unit are:

1. Arithmetic logic unit.
2. Main Memory unit.
3. Control unit.

Question 3.
What is Memory ? Name two types of memory.
Answer:
The storage capacity of computer is called memory.

Memory are of two types:
1. RAM – Random Access Memory:
The primary storage is referred to as random access memory (RAM) because it is possible to randomly select and use any location of the memory directly store and retrieve data. It takes some time to any address of the memory as the first address. It is also called read/write memory.

2. ROM:
ROM is an acronym for Read-Only Memory. It refers to computer memory chips containing permanent or semi-permanent data. Unlike RAM, ROM is non-volatile; even after you turn off your computer, the contents of ROM will remain.

Question 4.
Describe about Laptop.
Answer:
Laptop is a portable personal computer. It is light in weight and small enough. It is very easy to operate in a person’s lap. It has its own battery and can be charged easily as required. It can be carried while travelling.

Question 5.
What is Tablet ?
Answer:
Tablet is very thin portable computer. It is usually battery powered. It has a touch screen as the primary interface of an input device. It has no keyboard and mouse.

4. Long Answer Type Questions

Question 1.
Discuss about Primary Memory.
Answer:
Primary memory is also known as main memory of Computer System. It is directly accessible memory by Microprocessor which is a control unit of CPU. All the instructions and data must be present in primary memory before processing. This memory is also known as main memory of computer. There are two types of primary memories used within the computer.

RAM (Random Access Memory):
This primary memory is the main memory of computer. It is very fast memory of computer. All instructions and data are stored here during processing. This memory is volatile in nature i.e. all contents stored in this memory are lost when power goes off. This device cannot hold data permanently.

ROM (Read Only Memory):
This memory is a permanent memory attached on the motherboard of computer system. Content stored in it cannot be changed as it is read only memory. This memory hold instructions and data required for computer system to start. No write operation is allowed on this memory.

Question 2.
Discuss about Secondary Memory.
Answer:
Secondary Memory
Secondary storage is called auxiliary storage. It is a permanent memory of computer system. As we studied earlier, primary memory RAM is not permanent and ROM do not allow user to store any data on it. So, to provide permanent storage in computer, we use secondary storage devices. This memory is not directly accessible by the processor. It is for storing data not in active use. So it is called non-volatile memory. In a personal computer, secondary storage typically consists of hard disk drive and many removable media like CD, DVD or USB Pen Drive etc.

Question 3.
Explain Control Unit.
Answer:
Central Processing Unit of a computer system can be divided into three parts:-

1.  Memory Unit (MU)
2. Control Unit (CU)
3. Arithmetic Logical Unit (ALU)

1. Memory Unit:
Memory Unit of a computer system is also known as “Storage Unit”. It holds data and instructions in computer system. There are several types of memories. Each of them is having its different role to perform. Their size, storage capacity, nature of operation and speed make them different from each other.

2. Control Unit:
The control unit is the brain of computer. It performs all the operations given in the form of input instructions or programs. It also controls the functioning of all other components of computer. It accepts all the instruction from input unit and generates series of control signals according to the input instructions given. These Control Signals then operate the other parts of the computer. This is the main function of Control unit.

3. Arithmetic Logical Unit (ALU):
This is a core component of computer CPU. As per its name, it performs all the arithmetic and logic related tasks during processing. In digital computer, all the operations are performed logically and contain a lot of calculations to be processed. Processing of arithmetic operations and all logical operations like AND, OR, NOT etc. are done by this part of CPU. This part of computer system is integrated within the “Microprocessor”.

Punjab State Board PSEB 6th Class Computer Book Solutions Chapter 1 Introduction To Computer Textbook Exercise Questions and Answers.

PSEB Solutions for Class 6 Computer Science Chapter 1 Introduction To Computer

Computer Guide for Class 6 PSEB Introduction To Computer Textbook Questions and Answers

1. Fill in the Blanks

Question 1.
Computer is a/an ……………
(a) Electronic Machine
(b) Mechanical Machine
(c) Magnetic Machine
(d) All of above.
Answer:
(a) Electronic Machine

Question 2.
Computers can do ……………
(a) Calculations
(b) Accept data and instructions
(c) Storage
(d) All of above
Answer:
(d) All of above

Question 3.
Computer performs its operations with high ……………
(a) Speed
(b) Accuracy
(c) Efficiency
(d) All of above.
Answer:
(d) All of above

Question 4.
In banks, computer is used for ……………
(a) Keeping the bank safe
(b) Keeping Account records.
(c) Keeping bank clean
(d) None of these.
Answer:
(b) Keeping Account records

Question 5.
Time taken by computer to do a work can be measured in ……………
(a) Minutes
(b) Hours
(c) Milliseconds
(d) Days.
Answer:
(c) Milliseconds

Question 6.
In Education, a computer is used for ……………
(a) Preparing Notes
(b) Preparing results
(c) Preparing Reports
(d) All of these.
Answer:
(d) All of these

Question 7.
Which one of these is a limitation of Computer
(a) Speed
(b) Accuracy
(c) No IQ
(d) Diligence.
Answer:
(c) No IQ.

2. Short Answer Type Questions

Question 1.
Define Computer.
Answer:
Computer is an electronic device which gets the data and instructions from the user. It processes the data as per given instructions and gives the result in the desired form. Computer can be defined as :
A computer is an electronic machine that accepts data as input from the user and processes the data under the control of a set of instructions and gives the result as an output.

Question 2.
Explain the uses of computer in Education Field.
Answer:
Students and teachers are using computers in their education. Teachers use computers to teach the students and students use computers to prepare their notes, making drawing and making projects etc. The internet is used to search study material. Results, time-table and various reports are prepared using the computer. Computers are also used for record keeping online data processing etc.

Question 3.
Write the name of any three Portable Computing Devices.
Answer:
The name of three portable computing devices are:

• Mobile phone
• Palmtop computer
• Tablets

3. Long Answer Type Questions

Question 1.
What are the characteristics of computer ?
Answer:
The main characteristics of computers are as given below :
1. Speed : Computer is a very fast machine. It can do calculation in milliseconds. It can complete days work in seconds. That is why it has reduced human effort.

2. Accuracy : Computer is an accurate machine. It never makes any mistakes. If a mistake is performed in any calculation that is
always due to human error. A computer can do any task repeatedly for thousands of times without any error.

3. Reliability : Reliability means the ability of being trusted. A computer is a reliable machine. We cannot doubt the results given by computers because they are always correct. There is no need of rechecking the results. It gives the same result every time.

4. Diligence : Computer never gets tired. It can do work for many days or even for years. During this time its efficiency does not decrease and neither it commits errors after long working. In fact, a computer is a hardworking machine.

5. Automation : Automation means to do the work automatically. Computers can be instructed to do the work without any interaction. He can be given the instructions and the computer can do work without asking anything. We just need to start the computer and ask him to do the particular work. After that it will do the whole work without asking anything.

6. Storage : The storage capacity of computers is very large. It can attach many storage devices such as hard disk, pen drive at 17 to it. it can store any type of data such as text, audio, video animation in it. We can also store the storage capacity of computers. Computers store data for a very long time.

Question 2.
Define any five applications of Computer.
Answer:
Computers are used in many areas. Some of the application areas of Computer are given below :
1. Education: Students and teachers are using computers in their education. Teachers use computers to teach the students and students use computers to prepare their notes-making, drawing and making projects etc. The internet is used to search study material, results time-table and various reports are prepared using the computer. Computers are also used for record keeping, online data processing etc. Punjab Education Department is using computer on their web portal like www.epunjabschool.gov.in, www.pseb.ac.in

2. Entertainment: Computers are a good source of entertainment also. The user can watch movies, listen song and camp. Beautiful presentations can be made on the computer. All the films made these days use computers for their special effects.

3. Sports : Computers are also used in the sports field. They are used to improve the performance of players to keep data and to evaluate the performance and to display information about various tournaments which will happen in future. Digital scoreboards are also a part of games today. The players can improve their games by analysing their record.

4. Communication : Computers have given new ways of communication. The user can make video calls, audio calls, chat using computer data and send email to their friends and relatives. Any type of data can be shared using smartphone, tablet, laptop and computers.

5. Shops : Shopkeepers are also using computers for their various works. They are using computers to manage their stock to generate purchase orders to generate bills to advertise their shop. The use of computers in shops saves a lot of time for the shopkeeper and the customer.

Question 3.
What are the limitations of Computer ?
Answer:
The main limitations of computer are as under:

• A computer cannot take decisions by itself.
• A computer cannot correct wrong instructions.
• Computer cannot do any work without instruction from the user.
• It does not have feelings or IQ (Intelligence Quotient).
• It does not have knowledge and experience like a human being.
• Computer can not start work until asked.

Question 4.
What do you mean by Portable Computing Devices ? Explain any three of them.
Answer:
Portable devices are those devices which can be easily carried from one place to another. Technology has given us many portable devices. Some of them are explained below :
1. Mobile Phone or Smart Phone :
It is the most common portable computing device used in these days. Each one is using their mobile phones these days. Smart phones can do a lot of calculation work and processing. Their speed is also very fast. Modern mobile phones are equipped with camera, large storage capacity and high processing speed. They can be used in education, business trading, entertainment, gaming etc. Mobile phones are very small devices. It can be carried in our pockets. There are a lot of mobile phones available in the market with different features.

2. Tablet Computer :
It is a small computer. It is mainly known as a tablet. If the battery is used in this tablet. It has a touch screen which is used to give input and get the output. Tablets can be used for many purposes. Most of the students are using tablets in their education at home as well as at their schools.

3. Palmtop Computer :
Palmtop computer is a small size computer which can be placed on our palm. This computer has a small screen and small keyboard. It is just like a mobile phone having a keyboard. These computers are not very popular these days. These computers were used for limited purposes only.

Question 5.
Explain the uses of Computer.
Answer:
The applications of Computer are :

1. We can do mathematical calculations on the computer.
2. We can play games on the computer.
3. We can draw pictures on the computer.
4. We can listen to songs and watch films on the computer.
5. We can use computers to print books and newspapers.
6. We can use computers to book our tickets to travel in trains, buses and airplanes.
7. We can check the arrival and departure time of trains, buses and airplanes with the help of a computer.
8. We can check the weather conditions of any place before travelling.
9. We can print reports, results of our school or time-table.
10. We can store our data into a computer for future use.

PSEB 6th Class Computer Guide Introduction To Computer Important Questions and Answers

1. Fill in the Blanks

Question 1.
…………… is an electronic machine.
(a) TV
(b) Typewriter
(c) Computer
(d) All of these.
Answer:
(c) Computer

Question 2.
The speed of computer is …………..
(a) Fast
(b) Slow
(c) Medium
(d) None of these.
Answer:
(a) Fast

Question 3.
Computer has very large ……………
(a) Speed
(b) Memory
(c) Display
(d) Keyboard.
Answer:
(b) Memory

Question 4.
In business computers are used to prepare …………….
(a) Cash
(b) Tickets
(c) Books of accounts
(d) None of these.
Answer:
(c) Books of Accounts

Question 5.
Computers are used in Education by………… and ………….
(a) Teachers, Students
(b) Businessman, Banker
(c) Parents, Children
(d) All of these.
Answer:
(a) Teachers, Students.

2. True or False

Question 1.
Computer can perform Mathematical Calculations.
Answer:
True

Question 2.
Computer cannot take decision itself.
Answer:
True

Question 3.
Computer doesn’t have storage capacity.
Answer:
True

Question 4.
A computer cannot correct wrong instructions.
Answer:
False

Question 5.
Computer is an electronic machine which receives input, processes it and gives output.
Answer:
True

3. Short Answer Type Questions

Question 1.
What is a computer ?
Answer:
A computer is an electronic device that accepts input, processes data, stores data, and produces output.
Computers are not very intelligent devices, but they handle instructions flowlessly and fast. They must follow explicit directions from both the user and computer programmer. Computers are really nothing more than a very powerful calculator with some great accessories.

Question 2.
Give definition of computer.
Answer:
The computer is a digital electronic machine that processes data to give information. A computer is an electronic device, operating under the control of instructions stored in its own memory that concept data, manipulate the data according to specified rules, produce results, and store the results for further use.

Question 3.
What can we do on a computer ?
Answer:
A computer accepts input, processes data, stores data and produces output. Computer can perform the following functions :

• Mathematical calculation
• Desktop Publication
• Play Games
• Drawing
• Multimedia
• Booking of Railway and Airplane Tickets
• In Banks
• In Medicine etc.
• Libraries Automation
• Shops Automation
• Domestic work.

Question 4.
How a Computer is helpful in Health and Medicine?
Answer:
Computers are necessary in every area of health and medicine, The following are the important tasks in health and medicine where computer is used:

For maintaining patient history and records.
As an aid in operation theatre.
Also used for patient monitoring and diagnosis of diseases.
For taking appointment of doctor.

Question 5.
How a computer is helpful in Banks?
Answer:
In bank, computers are used to maintain records of loans, customers, credits and also used in ATM’s.

4. Long Answer Type Questions

Question 1.
Write down about the fields where a Computer can be used ?
Answer:
Following are the uses of computer in Modern Times:

• We can do mathematical calculations on the computer.
• We can play games on the computer.
• We can draw pictures on the computer.
• We can listen to songs and watch films on the computer.
• We can use computers to print books and newspapers.
• We can use computers to book our tickets to travel in trains, buses and airplanes.
• We can check the arrival and departure time of trains. buses and airplanes
• with the help of a computer.
• We can check the weather conditions of any place before travelling.
• We can print reports, results of our school or time t.able.
• We can store our data into a computer for future use.

Question 2.
Write down characteristics of a Computer.
Answer:

Speed : Computer is a very fast machine. It can do calculation in milliseconds. It can complete days work in seconds. That is why it has reduced human effort.

Accuracy : Computer is an accurate machine. It never makes any mistakes. Ifa mistake is performed in any calculation that is always due to human
error. A computer can do any task repeatedly for thousands of times without any error.

Reliability: Reliability means the ability of being trusted. A computer is a reliable machine. We cannot doubt the results given by computers because they are always correct. There is no need of rechecking the results. It gives the same result every time.

Diligence : Computer never gets tired. It can to do work for many days or even for years. During this time its efficiency does not decrease and neither it commits errors after long working. In fact, a computer is a hardworking machine.

Automation : Automation means to do the work automatically. Computers can be instructed to do the work without any interaction. He can be given the instructions and the computer can do work without asking anything. We just need to start the computer and ask him to do the particular work. After that it will do the whole work without asking anything.

Storage : The storage capacity of computers is very large. It can attach many storage devices such as hard disk, pen drive at 17 to it. It can store any type of data such as text. audio, video, animation in it. We can also store the storage capacity of computers. Computers store data for a very long time.

Question 3.
Write down the limitations of a Computer.
Answer:

Computers are capable of doing a lot of work. But, after all this is a machine and unable to do some tasks. These kinds of tasks are considered as limitations of computers.

Some of the main limitations of computer are as under:

• A computer cannot take decisions by itself.
• A computer cannot correct wrong instructions.
• Computer cannot do any work without instruction from the user.
• It does not have feelings or IQ (Intelligence Quotient)
• It does not have knowledge and experience like a human being.
• Computer can not start work until asked.