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Hundreds if not Thousands, there is no way to definitively say.

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Q: How many types of devices was invented based on the history of computer?
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What is the function of multiplexer in computer based instruments?

It allows a single controlsystem to control many devices.


What are computer-based communications?

Computer-mediated communication (CMC) is defined as any human communication that occurs through the use of two or more electronic devices.


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Is history of computer and generation of computer the same?

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What are mobile computers and why were they created?

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I am not sure which device you are asking about, but one pioneer in the development of computer memory devices is the Chinese-American inventor An Wang. In the late 1940s, he invented the magnetic pulse controlling device; this discovery is important because it is the principle upon which magnetic core memory is based. Another important inventor was Jay Wright Forrester, who also made a major breakthrough in the late 1940s. Forrester invented the random-access magnetic core memory, still in use in most digital computers even today.


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