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What the very first computer looked like. The very first machines for quickly performing complicated calculations were built around 200 years ago. They used a mechanism made up of gears, cog wheels, and axles. A more recent relative of those devices was the Colossus, which is considered to have been the first electronic computer.
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Charles Babbage invented the first computer.
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The second generation of computers that were developed during the period of 1956 to 1963 are called second generation computers. They are different from first generation computers as they used transistors instead of vacuum tubes as transistors are smaller in size, the computers become smaller in size.
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David Packard and Bill Hewlett found their company in a Palo Alto, California garage. Their first product the HP 200A Audio Oscillator rapidly became a popular piece of test equipment for engineers.
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The Z3 an early computer built by German engineer Konrad Zusr working in complete isolation from developments elsewhere uses 2,300 relays, performs floating point binary arithmatic, and has a 22-bit word length.