COMPUTER HISTORY AND EVOLUTION
EARLY COMPUTING DEVICES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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2 green, 3 red, 4 white, 5 yellow
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2 red, 3 white, 4 yellow, 5 green
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2 white, 3 yellow, 4 green, 5 red
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2 yellow, 3 green, 4 red, 5 white
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Detailed explanation-1: -Assign each column a place value. As on a modern calculator, each column of beads represents a “place” value from which you build a numeral. So, the farthest column on the right would be the “ones” place (1-9), the second farthest the “tens” place (10-99), the third farthest the hundreds (100-999), and so on.
Detailed explanation-2: -We know that the spike abacus represents the number where the digits are represented by the spikes of the abacus. In ones or unit place there are two beads that represents 2 and in tens place there are three beads that represents 3.
Detailed explanation-3: -What is Abacus? It is an instrument that is used to calculate or count by using sliding counters and a rod. It was indeed the world’s first calculator. It was first used in Europe, China, and Russia.