Abacus was the first __________________.
Correct answer: D. mechanical calculator
- A. Electronic computer
- B. mechanical computer
- C. electronic calculator
- D. mechanical calculator
Explanation
The abacus is a manually operated mechanical calculating device and is widely described as the earliest calculator. It was not electronic because it uses beads and rods rather than electrical circuits.
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About Computer Fundamentals
Computer fundamentals covers the history and generations of computers, their characteristics, applications and limitations, and the basic data-processing cycle. It includes binary, decimal, octal and hexadecimal number systems, units of storage, input and output devices, memory types, operating systems, and the distinction between raw data and processed information.
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