Class 5 Chapter 3

Input and Output Devices

Answer the following questions

a. What are input devices? Write any four examples.

Ans: The devices that are used to enter data and instructions into the computer are called input devices. Eg. keyboard, mouse touch pad, touch screen, Joystick etc.

b. Explain the method of using touch pad.

Ans: Method of using touch pad are given below:

i) To move the pointer on the screen move your finger around on the touchpad.

ii) To select an object on the screen position the pointer over the object and click once.

iii) To start a program or open file position the pointer over the object an double click on it.

iv) To access a shortcut menu position the pointer over the object and click right button once.

v) to move an object on the screen position the pointer over the object and press left button and hold it and use touch pad to move it. 

c. What are output devices? Write some commonly used output devices.

Ans: The device that are used to get output from the computer are called output device. Example: Monitor, speaker, printer.

d. What is monitor? Write its types.

Ans: Monitor is a primary output device of computer. It is also known as Visual Display Unit (VDU). It gives us soft copy output that is displayed on the screen.

e. What is printer? Write its types?

Ans: Printer is the basic output device that is used to print the output on the paper. The output printed on the paper is called hard copy output. There are three types of printer they are: Dot Matrix Printer, Inkjet Printer, Laser Printer.

f. What is speaker?

Ans: Speaker is an output device which produce different sound from the computer and it is also used to listen music or sound in the computer.

g. What is scanner? Write its any two uses.

Ans: Scanner is an input device that optically scans images, printed text or an object, and sends them to the computer. It is also called the direct entry or non-keyboard input devices.

h. What is joystick?

Ans: Joystick is an input device that is often used to play computer games. 

i. Write any four differences between LED and CRT Monitor.

Ans: 

LED Monitor	CRT Monitor
1. It consumes very less power than CRT Monitor.	1. It consumes more power than LED Monitor.
2. It is lighter and more portable than CRT monitor.	2. It is bigger in size and heavier than LED monitor.
3. It uses a special kind of Light Emitting Diodes to display video and graphics on the screen.	3. It uses a Cathode ray tube to display video and graphics on the screen.
4. Full form of LED Light-emitting Diodes	4. Full form of CRT is Cathode Ray Tube.

j. What is a web Camera?

Ans: A web camera is a kind of camera that takes photos or videos and sends them to the computer. It is widely used in internet chatting.