An old-school mechanical device consisting of sliding rules and scale markers used by engineers to calculate multiplication and trigonometry via logarithmic scales is a: MCQ with Answer and Explanation

An old-school mechanical device consisting of sliding rules and scale markers used by engineers to calculate multiplication and trigonometry via logarithmic scales is a:
A. Abacus Unit
B. Slide Rule
C. Digital Calculator
D. Difference Engine
Answer: Option B
Solution (By JKSSB Mock Tests)
The Slide Rule is an early analog mechanical calculating device that uses physical alignment lengths on logarithmic scales to perform math.

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Practice More Computer Fundamentals Questions

Question #1
What is the decimal equivalent of octal 15?
A. 15
B. 14
C. 13
D. 16

Correct Answer: Option C


Explanation:
Octal 15 = 1*8 + 5 = 13 decimal.

This question belongs to: Computer Computer Fundamentals
Question #2
What does the acronym 'CPU' stand for?
A. Central Program Unit
B. Central Processing Unit
C. Control Processing Unit
D. Computer Personal Unit

Correct Answer: Option B


Explanation:
CPU stands for Central Processing Unit, the primary component that executes instructions.

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Question #3
What is the binary equivalent of decimal 100?
A. 1101000
B. 1100100
C. 1111010
D. 1001100

Correct Answer: Option B


Explanation:
100 = 64+32+4 = 1100100.

This question belongs to: Computer Computer Fundamentals