Shamrock Prerna School

II – Unit Test

Class – III

Subject – Computer

                                                                                                                                                                                                  M.M. – 10

Name – 

A – Tick the correct option :-                          [ 4 × ½ = 2 ]
1. Which of the following device works the fastest

• analytical engine

• modern computer

• comptometer

2. When was Napier’s Bone invented?

• 1645

• 1690

• 1617

3. A computer can perform billions of tasks in a –

• few seconds

• few minutes

• few hours

4. Which was the most significant early computing device ?

• ABACUS

• Analytical Engine

• UNIVAC – I

B – Write true or false :-                   [ 4 × ½ = 2 ]
1. Monitor displays the output.
2. Computer gets tired easily.
3. The input we enter is called as output.
4. ABACUS is used for calculations nowadays.

C – Unscramble the following words :-                       [ 4 × ½ = 2 ]
1. OUMES
2. POCSSREGIN
3. OPTCEUMR
4. IPNUT

D – Answer the following questions :-      ( any two )                  [ 2 × 2 = 4]

Q1. What are the features of the modern computer?

Q2. What do you understand by computer?

Q3. Explain the working of a computer.