BASIC COMPUTER CONCEPTS
HISTORY OF COMPUTERS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Abacus
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Stepped Reckoner
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Counting Clock
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Stones and Pebbles
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Detailed explanation-1: -The earliest known calculating device is probably the abacus. It dates back at least to 1100 bce and is still in use today, particularly in Asia. Now, as then, it typically consists of a rectangular frame with thin parallel rods strung with beads.
Detailed explanation-2: -The answer is the abacus, which was invented by Blaise Pascal in 1642. An abacus is a manual calculating device that consists of many rows of beads that reflect numbers and digits and can be arranged to perform calculations.
Detailed explanation-3: -Abacus was the first mechanical calculator.
Detailed explanation-4: -The abacus shows how numbers, letters, and signs can be stored in a binary system on a computer, or via ASCII. The device consists of a series of beads on parallel wires arranged in three separate rows. The beads represent a switch on the computer in either an “on” or “off” position.