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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Stepped Reckoner
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Havard Mark I
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Tabulating Machine
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Analytical Engine
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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: -Gottfried Leibniz’s 1673 “Step Reckoner” introduced a design innovation that enabled a single gear to represent any digit from 0 to 9 in just one revolution. This stepped-drum approach dominated calculator design for the next two centuries.
Detailed explanation-3: -For his decimal calculating machine, Leibniz conveyed the single steps of solution from calculating in writing systematically into the mechanical process of counting which is conducted by cylindrical rollers with ten different sprockets of different sizes in combination with cogs.