Q. 1 Choose the correct option.

a. The Electronic Numerical Integrator and Computer (ENIAC) is an example of

computers.

i. Second generation	ii.	Third generation
iii. First generation	iv.	Fourth generation

b. Identify the limitation of a computer from the following.

i. A computer can perform calculations at a high speed.

ii. A computer is a multipurpose machine.

iii. A computer is a reliable machine.

iv. A computer can store huge amounts of data but only the human brain can use and implement it.

c. An Abacus has two sections named Earth and .

i.	Mill	ii.	Numerical wheels
iii.	Store	iv.	Heaven

d. Which device is an example of mainframe computers?

i.	K-202	ii.	Sequoia
iii.	PARAM.	iv.	Hitachi’s Z800.

a. In the second generation of computers, which device replaced vacuum tubes?

b. This machine was the first mechanical calculating machine with numerical wheels.

c.	Which calculating device has two parts- the calculating mechanism and printing and control mechanism?
Ans:	Difference engine
Q. 3	Answer the following.
a.	What is the advantage of Artificial Intelligence? Explain with example.
Ans:	· A computer can be made to think like a human being with the help of AI. · For example, ASIMO has the ability to recognize moving objects, postures, gestures, its surrounding environment, sounds, and faces, which enables it to interact with humans.
b.	Explain the difference between the first generation and second generation of computers?
Ans:	· The first generation of computers used vacuum tubes as the main electronic component. They were very large in size and expensive. · The second generation of computers replaced vacuum tubes with transistors. Because of the transistors the size of the second generation computers reduced to a large extent.
c.	What are the features of a supercomputer?
Ans:	· Supercomputers are the most powerful computers in terms of performance, data processing and speed. They are very expensive and quite large. A supercomputer needs to be accommodated in large air-conditioned rooms; some super computers can span an entire building.These are specialised and task-specific computers used by very large organisations.