COMPUTER HISTORY AND EVOLUTION
DEVELOPMENT OF COMPUTERS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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What are abacus?
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a simple device for calculating, consisting of a frame with rows of wires or grooves along which balls slide
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slips of ivory or other material divided into sections marked with digits, devised by John Napier and formerly used to facilitate multiplication and division.
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a ruler with a sliding middle strip, marked with numerical scales and used for making quick calculations, especially multiplication and division.
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None of the above
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Explanation:
Detailed explanation-1: -The abacus (plural abaci or abacuses), also called a counting frame, is a calculating tool which has been used since ancient times. It was used in the ancient Near East, Europe, China, and Russia, millennia before the adoption of the Hindu-Arabic numeral system. The exact origin of the abacus has not yet emerged.
Detailed explanation-2: -What is an Abacus? An abacus is a mathematical tool used for computing large numbers quickly. The first abacuses were used over 4000 years ago by the Mesopotamians and are still used today by many merchants worldwide.
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