Who built the first Mechanical Calculator

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• Who built the world’s first electronic calculator using telephone relays, light bulbs and batteries?
• …………..built the Z4, a relay computer with a mechanical memory of unique design, during the war years in Berlin.
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• …………….is popularly recognized in Germany as the father of the computer and his Z1, a programmable automaton built from 1936 to 1938, is said to be the world’s ‘first programmable calculating machine’.
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• Note books of the ……………….artist-engineers such as Taccola and Leonardo da Vinci give a deep insight into the mechanical technology then known and applied.
• …………………first machine was known as Mark I and originally named the IBM ASCC and this was the first machine that could solve complicated mathematical problems by being programmed to execute a series of controlled operations in a specific sequence.
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• What was the name of the first commercially available microprocessor chip?
• First generation computer systems used