BASIC COMPUTER CONCEPTS
HISTORY OF COMPUTERS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Pascaline
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Stepped Reckoner
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Calculating Clock
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Arithmometer
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Detailed explanation-1: -Step Reckoner, a calculating machine designed (1671) and built (1673) by the German mathematician-philosopher Gottfried Wilhelm von Leibniz. The Step Reckoner expanded on the French mathematician-philosopher Blaise Pascal’s ideas and did multiplication by repeated addition and shifting.
Detailed explanation-2: -Which types of calculating could be done using Stepped Reckoner? Ans: Stepped Reckoner was devised to perform addition, subtraction, multiplication, division and to find square root.
Detailed explanation-3: -The so called “stepped drums", invented by Leibniz, can be twisted with a crank and cogs of different sizes around 0 to 9 sprockets further. Depending on the direction of movement, these can be either added or subtracted. The multiplication is conducted as a reocurring addition, the division as an ongoing subtraction.
Detailed explanation-4: -It was the first known calculator that could perform all four arithmetic operations; addition, subtraction, multiplication and division. 67 cm (26 inches) long.