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Manual Calculators called abacus appeared in China in 1200 and Japan in 1600
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in 1621, an English mathematician constructed the first slide rule.
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Pascaline a mechanical device that could be used to perfom addition, subtraction, multiplication, and division.
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Difference Engine, powered by steam power. Invented to quickly and accuratly calulate large tables of numbers.
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a general-purpose calculating device that was never finished.
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Used by the U.S. census bureau for the next generation of calculating machines.
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first computer using vaccum tubes was being created.
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The ABC might not have been the best computer but it opneded the way for computing futrure.
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Howard Aiken, tried to intergrate 73 IBM accounting machines into one unified computing machine.
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Birtish developers created COLOSSUS
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Mauchly and Eckert started to create ENIAC
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Aiken thought that only 6 computers would be needed to satisfy the computing needs of the world.
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Second-generation computers came to our world.
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transistors take over and replace vaccum tubes.
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the first UNIVAC computer was created.
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UNIVAC was delivered to customers.
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Texas Instruments develpoed the first independently intergrated circuts.
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Dec introduced the DEC PDP-8, the first commercially succesful minicomputer.
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Motorala release the first bit micro processor.
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Zilog introuduce the Z80 microprocessor and enhanced 8080 microprocessor.
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Steve Jobs and Steve Wozniak founded the Apple Computer.
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Compaq bought DEC and became a new computer company.
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the IBM AS/400 became known as a minicomputer.