CBSE-ComputerScience-Class-V(Solved Exercise-2):

Class-5

Subject: Computer Science

Chapter -2 Uses of Computer (Solved Exercise)

A. Name the following:

1. Two examples of second generation computers.

Answer: ENIAC 1401, IBM 700

2. Inventors of ENIAC.

Answer: John Presper Eckert and John W. Mauchly

3. Two programming languages in second generation computers.

Answer: COBOL, BASIC

4. Technology of fifth generation computers.

Answer: Artificial Intelligence

5. Silicon chip with integrated circuits.

Answer: Microporcessor

B. Choose the correct answer:

1. An arrangement of ___ was used in the first generation computers.

a. vaccum tubes b. silicon chip c. microprocessor d. Integrated circuits

Answer: Vaccum tubes

2. ____________ was the first fully automatic calculator.

a. ENIAC b. EDVAC c. Mark-I d. EDSAC

Answer: Mark-I

3. EDSAC was invented in _____________________________.

a. 1948 b. 1951 c. 1946 d. 1949

Answer: 1949

4. __________________ is a third generation computer.

a. IBM 360 b. IBM 4300 c. IBM 1401 d. IBM 700

Answer: IBM 360

5. _____________ had no stored programs.

a. EDSAC b. Mark-I c. ENIAC d. EDVAC

Answer: ENIAC

C. Write true or false:

1. Fifth generation computers are able to think and take decisions like humans. F

2. Voice recognition is an application of the fourth generation computers. F

3. Punched cards were used in the first generation computers only. F

4. Prof. M. Wilkes invented UNIVAC in 1949. F

5. EDVAC was the first computer to use binary system. T

D. Answer the following questions:

1. Differentiate between the features of first generation and second generation computers.

Answer: Some features of the first generation computers:

They were very heavy and large in size.
They were expensive and slow.
They consumed a lot of electricity which generated a lot of heat.
Their programming capacity was very low.
Inputs were given in the form of punched cards.

Some features of the second generation computers:

They were smaller, cheaper and faster than first generation computers.
Inputs were given in the form of punched cards.

2. What is the goal of the fifth generation computers? How is artificial intelligence becoming a reality?

Answer: The goal of fifth generation computing is to develop devices that respond to natural language input and are capable of learning and self-organisation.

The technology used for this generation is artificial intelligence which is the ability of computers to think and act like humans.

3. What are the features of fourth generation computers?

Answer: Some features of the fourth generation computers.

They are smaller, cheaper and faster than third generation computers.
They are more advanced in terms of processing and memory capacity.
They led to the development of personal computers.
They are used at homes and offices.

4. Write any three features of first generation computers.

Answer: Three features of the first generation computers:

They were very heavy and large in size.
They were expensive and slow.
They consumed a lot of electricity which generated a lot of heat.

5. Write a note on third generation computers.

Answer: Third generation computers were used between 1964 and 1975. Integrated circuits were used instead of transistors in these computers.

Some features of third generation computers.

They were smaller, cheaper, faster and more accurate than second generation computers.
These computer could execute any type of application and were called general-purpose computers.
Keyboards were used to input data and monitor were used as output device.
They had more storage capacity.