Which early calculating instrument, composed of a wooden frame holding parallel rods with sliding beads, is recognized as the world's first computing device? MCQ with Answer and Explanation
Which early calculating instrument, composed of a wooden frame holding parallel rods with sliding beads, is recognized as the world's first computing device?
A. Napier's Bones
B. Abacus
C. Pascaline
D. Slide Rule
Answer: Option B
Solution (By JKSSB Mock Tests)
The Abacus, developed thousands of years ago, was the earliest structured mechanical device used for basic arithmetic calculations.
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