Who invented the slide rule, an analog computing tool used extensively before electronic calculators? MCQ with Answer and Explanation

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Who invented the slide rule, an analog computing tool used extensively before electronic calculators?

A. William Oughtred

B. Gottfried Leibniz

C. John Napier

D. Blaise Pascal

Answer: Option A

Solution (By JKSSB Mock Tests)

William Oughtred invented the circular and rectilinear slide rule in the 1620s based on John Napier's logarithms.

This question belongs to: Static General Knowledge Inventions and Discoveries

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Who invented the first working internal combustion engine powered by gasoline?

A. Henry Ford

B. Nikolaus Otto

C. Rudolf Diesel

D. Karl Benz

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Correct Answer: Option D

Explanation:
Karl Benz is widely acknowledged as the inventor of the modern gasoline-powered automobile (1885/1886) using an internal combustion engine.

This question belongs to: Static General Knowledge Inventions and Discoveries

Question #2

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The invention of the common digital computer operating memory layout known as the Virtual Memory system was pioneered where?

A. Stanford University

B. IBM Laboratories

C. University of Manchester on the Atlas computer project

D. Xerox PARC

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Correct Answer: Option C

Explanation:
The Atlas computing development team implemented structural hardware address translation systems in 1959 to pool core and drum memories.

This question belongs to: Static General Knowledge Inventions and Discoveries