Class- 4 | Computer Technology | Chapter – 1 | History of Computers

 

Class- 4 | Computer Technology | Chapter – 1 | History of Computers

Exercise Solutions | By: - Ashok Sir

 

A.Oral Questions

          1. What was the first calculating machine?

          Ans: Abacus            

2.    Who is the father of computer?

Ans: Charles Babbage.

3.    What was the full form of IBM?

Ans: International Business Machines.

4.    What was Pascaline?

Ans: It was the first mechanical calculator.

 F. Write the full form of the following:

                1. ABC            :           Atanasoff Berry Computer

                2. UNIVAC     :           Universal automatic Computer

                3. ENIAC         :           Electronic Numerical Integrator and Calculator

                4, IBM             :           International  Buisness Machine

G. Answer the following questions:

1. Define Abacus.

Ans: Abacus was the first calculating machine used to count numbers.

2. Describe about Pascaline.

Ans: Pascaline was the first mechanical calculator

3. Describe Jacquard Loom.

Ans: In Jacquard Loom, punched card controlled the actions of loom and allows automatic production of complex woven pattern.

4. What is the use of Napier’s bones?

Ans: The use of Napier’s bones for simple calculation like add, subtract, multiply and divides.

 5. What is the function of Leibniz Calculator?

Ans: The function of Leibniz Calculator to find square roots and simple calculation like add, subtract, multiply and divides.