PARAGON CONVENT SCHOOL
SECTOR 24 B CHANDIGARH
CLASS - 3
CHAPTER 1 – COMPUTER HARDWARE
Recap:-
1. A Computer has two main parts – Hardware and software.
2. The physical parts of computer that you can touch and see are called hardware.
3. A keyboard is the most common device to input data in the computer.
4. A mouse is used to point and select any object on the computer screen.
5. A monitor looks like a television and displays whatever we type or draw.
6. A printer is an output device that is used to print the output on a paper.
7. A light pen looks like a pen that is used on a special pad.
Q A. Who am I?
1. I give output on a paper. Printer 2. I can display whatever you type and draw. Monitor 3. I am used to point and select any object on the computer screen. Mouse 4. I help you to record your voice and the other sounds on a computer. Microphone
Q 2. State True or false.
1. The light pen can be used on a special book. False 2. The scanner is an input device. True 3. The joystick is an example of an output device. False 4. The printer is an output device. True 5. The device through which we get results are called the input devices. False
Q C. Answer the following questions:-
Q 1. Name three features which make the computer a powerful machine.
Ans. The three features which make the computer a powerful machine are: - a. Speed b. Reliability c. Storage
Q 2. Define the term ‘hardware’.
Ans. The physical parts of computer that we can touch and see are called hardware.
Q 3. What are input devices?
Ans. The devices that are used to input words, numbers, pictures or instructions are called the input devices.
Q 4. What is a scanner?
Ans. A scanner is an input device that reads words, pictures or numbers from a page directly and changes them into a form that a computer understand.
Q 5. What is the difference between a hard copy and soft copy?
Ans. The output displayed on the monitor is known as the soft copy.
The printed information on the paper is known as the hard copy.