Microprocessor Microprocessors, including an Intel 80486DX2 and an Intel 80386 A microprocessor (abbreviated as µP or uP) is an electronic computer central processing unit (CPU) made from miniaturized transistors and other circuit elements on a single semiconductor integrated circuit (IC) (aka microchip or just chip). Before the advent of microprocessors, electronic CPUs were made from discrete (separate) TTL integrated circuits ; before that, individual transistors; and before that, from vacuum tubes . There have even been designs for simple computing machines based on mechanical parts such as gears, shafts, levers, Tinkertoys , etc. Leonardo DaVinci made one such design, although none were possible to construct using the manufacturing techniques of the time. Th ...
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