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1. Abacus: The first mechanical counting device.

2. Napier’s Bones: A set of rods for multiplication.

3. Pascaline: The first mechanical calculator.

4. Analytical Machine: The conceptual basis for modern computers,
designed by Charles Babbage.

5. Mark I: The first electro-mechanical computer.
6. ENIAC: The first successful electronic digital computer.

7. EDVAC: Pioneered storing data and instructions in binary code.

8. UNIVAC: The first commercially available computer.
9. Computer Generations: The five phases of computer evolution, defined

by technological shifts.
10. Computer Types: The four main categories are Supercomputers,

Mainframe, Minicomputers, and Microcomputers.

Think and Answer
Think and Answer

A. Choose the Correct Option

1. Which computer is considered the first electro-mechanical computer?

a) ENIAC b) UNIVAC

c) Mark I d) EDVAC

2. What was a key feature of Blaise Pascal's Pascaline?

a) It used punched cards for input.
b) It was the first device to use vacuum tubes.

c) It worked with gears, wheels, and dials to perform calculations.

d) It could calculate square roots.

3. What is the primary reason the modern computer is considered a versatile
machine?

a) It was invented for complex calculations.
b) It is derived from the word 'compute.'

c) It can handle many different applications simultaneously.

d) It is affordable for individuals.

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