Class 3 || Computer Connect || Lesson 1: Components of a computer

Exercise

Oral Skills

1. Answer the following questions orally.

a. What is the purpose of an input device?

Ans: The purpose of an input device is to send data and instructions to the computer.

b. What is an LCD?

Ans: LCD is a monitor. The full form of LCD is Liquid Crystal Display.

c. What do you mean by processing?

Ans: A computer accepts, examines and calculates the result. This is called processing.

d. Name any two output devices.

Ans: Any two output devices are - Monitor and Printer.

Writing Skills

Multiple Choice Questions

2. Tick (✔) the correct option.

a. A ______ gives output on the paper.

    (i) Monitor ロ (ii) Printer ロ (iii) Keyboard ロ

Ans: (ii) Printer

b. ______ is a type of monitor.

   (i) LCD ロ (ii) Joystick ロ (iii) Scanner

Ans: (i) LCD-

c. ______ is an input device.

   (i) Keyboard ロ (ii) Printer ロ (iii) CPU ロ

Ans: (iii) CPU

d. ______ processes and stores the instructions that we feed into it.

  (i) Monitor ロ (ii) CPU ロ (iii) Printer

Ans: (ii) CPU

3. Give full forms of the following.

(a) CPU Central Processing Unit

(b) LCD Liquid Crystal Display

(c) IPO Input Processing Output

(d) CRT Cathode Ray Tube

4. Answer the following questions.

a. What do you mean by processing?

Ans: A computer accepts, examines and calculates the result. This is called processing.

b. What is an IPO cycle?

Ans: A computer works on the principle of IPO cycle.

c. What is CPU?

Ans: CPU is the main processing device.

d. Write the types of monitor.

Ans: Two types of monitor are :

    1. LCD monitor

    2. CRT monitor

e. What is a mouse?

Ans: A mouse allows us to select and move the objects on the screen.

Activity

Uncramble the following letters:

1. MUPCOTRE Computer

2. POCRSINGS 

3. OPUTUT  Output`