cpu

At one time computers were huge bulky machines which weighed many tons, and operated using old time "vacuum tubes." The invention of the silicon transistor in the early 1940's revolutionized the electronics industry. During the 1970s U.S. companies pioneered new manufacturing techniques called Very Large Scale Integration [VLSI]. It permitted the production of very compact electronic devices. Instead of one transistor, many (in fact, millions on a modern microprocessor) were integrated into a single …

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