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 does each row on an Abacus represent?
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Each row represents a unit ten greater than the previous.
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Each row represents a unit of ten
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Each row represents a unit ten greater than the next.
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None of the above
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Explanation:
Detailed explanation-1: -A simple abacus has rows (or wires) and each row has ten beads. Each row represents a unit ten greater than the previous. Thus, the first stands for units of one; the second, units of ten; the third, units of hundred; and so on.
Detailed explanation-2: -Each vertical column of beads represents a digit. The column on the far right represents ones, second from the right is tens, third from the right is hundreds, fourth from the right is thousands, and so on.
Detailed explanation-3: -There is a unit point (a white dot) marked at every 3rd rod on the abacus. This rod indicate the unit place value rod and the rods towards the left of this unit rod would be tens’ rod, hundreds’ rod, thousands’ rod etc.
There is 1 question to complete.