Which early calculating aid invented by John Napier used a set of numbered ivory rods to simplify complex multiplication and division tasks? MCQ with Answer and Explanation

Which early calculating aid invented by John Napier used a set of numbered ivory rods to simplify complex multiplication and division tasks?

A. Napier's Bones

B. Slide Rule

C. Abacus

D. Pascaline

Answer: Option A

John Napier invented 'Napier's Bones' in 1917, using carved rods to convert multiplication problems into simple addition steps.

This question belongs to: Computer Computer Fundamentals

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Question #1 Report Error

What is the primary function of the input unit in any digital computer architecture?

A. To convert human-readable input data into machine-understandable binary format.

B. To display the visual results of calculations.

C. To run complex mathematical operations.

D. To store processed records permanently.

Correct Answer: Option A

Explanation:
The input unit captures external data from the real world and translates it into digital signals (binary) that the CPU can execute.

This question belongs to: Computer Computer Fundamentals

Question #2 Report Error

What is the main disadvantage of first-generation computers?

A. Lack of software

B. High cost

C. Low speed

D. Large size and high power consumption

Correct Answer: Option D

Explanation:
First-generation computers were huge, consumed a lot of power, and generated excessive heat.

This question belongs to: Computer Computer Fundamentals

Question #3 Report Error

Which component is considered the brain of the computer?

A. Monitor

B. CPU

C. RAM

D. Hard disk

Correct Answer: Option B

Explanation:
The Central Processing Unit (CPU) is often called the brain of the computer because it executes instructions.

This question belongs to: Computer Computer Fundamentals