Learn With Computer 4 || Lesson 1. Brief History of Computer

EXERCISE

A. Multiple Choice Question. Tick (✔) the correct option.

(1) Who was Charles Babbage?

(a) Doctor

(b) Mathematician

(c) Lawyer

Ans: (b) Mathematician

 

(2) What was the name of first digital computer?

(a) Mark-I

(b) ENIAC

(c) Pascaline

Ans: (b) ENIAC

(3) First real mechanical calculator was built by:

(a) John Napier

(b) Charles Babbage

(c) Blaise Pascal

Ans: (c) Blaise Pascal

(4) In _____ German Mathematician Oughtred invented slide rule.

(a) 1620

(b) 1988

(c) 1795

Ans: (a) 1620

(5) Each wheel was divided into parts of Pascal's calculator.

(a) 18

(b) 16

(c) 10

Ans: (c) 10

B. Fill in the blanks:

(Mathematician, Mark-I, France, China, Charles Babbage, Slide rule, Difference Engine)

1. _____ was the name of the first automatic digital computer.

Ans: Mark-I

2. _____ was Charles Babbage.

Ans: Mathematician

3. Abacus was invented in about 2000 BC in _____.

Ans: China

4. The outline of the Analytical Engine was prepared by _____.

Ans: Charles Babbage

5. Pascaline was made in _____ by Blaise Pascal.

Ans: France

6. Charles Babbage made a very useful machine called _____.

Ans: Difference Engine

7. For easy calculation William Austraid invented _____.

Ans: Slide Rule

C. Mark these statements as correct (✔) or incorrect (メ)

1. The Abacus is still used in Russia, Japan, and China extensively.

Ans: ✔

2. John Napier invented slide rule.

Ans: メ

3. Mark-I was the first Multipurpose computer.

Ans: メ

4. Blaise Pascal is called the "Father of Computer".

Ans: メ

5. Difference Engine was developed by Charles Babbage.

Ans: ✔

D. Match the following:

1. Slide Rule        a. Charles Babbage

2. Analytical Engine b. Blaise Pascal

3. Mark-I            c. William Oughtred

4. Pascal Calculator d. Prof. Ackins and Prof Hopper

Ans: 1. - c

     2. - a

     3. - d

     4. - b

E. Answer the following questions:

1. What do you understand by computer?

Ans: A computer is an electronic machine which helps us in doing calculations. (Page 5 Para 1)

2. In ancient times, how was counting done by the man?

Ans: In ancient times counting was done with the help of things around him. For example: small stones, bones, fingers, etc. (Page 5 Para 2)

3. What is abacus?

Ans: The Abacus is the oldest calculating device.

4. Why is Charles Babbage called the "Father of the Computer"?

Ans: Charles Babbage called is the "Father of the Computer because he was the first man who made a machine that could calculate the value of algebraic formulate accurately up to 20 decimal places. (Page 7 Para 2)

5. What is considered as the first ancestor of modern computers?

Ans: Mark-I is considered as the first ancestor of modern computer.