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Microprocessor(microprocessor)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) (akamicrochip or just chip). Before the advent of microprocessors, electronic CPUs were made from discrete (separate) transistors; and before that, from vacuum tubes . There have even been designs for simple computing machinesbased on mechanical parts such as gears, shafts, levers, Tinkertoys , etc. Leonardo DaVinci made one such design, although none were possibleto construct using the manufacturing techniques of the time. The evolution of microprocessors have been known to follow Moore's Law when it comes to steadily increasing performance over the years.
Summary historyThe world's first commercial microprocessor was the 4-bit 4004 , released on November 15 , 1971 , invented by Marcian Ted Hoff . The 4004 was later followed by the 8008 . These processors are the precursors to the very successful Intel 8080 , Zilog Z80 , and derivativeIntel 8-bit processors. The competing Motorola 6800 architecture was cloned and improved in the MOS Technology 6502 , rivaling the Z80 in popularity during the 1980s . The 8080 is the ancestor of the 16-bit Intel 8086 , the first member of the x86 family which powers most modern PC type computers. Intel introduced the 8086 as a cost effectiveway of porting software from the 8080 lines, and succeeded in winning much business on that premise. Following up their 8086 and8088, Intel released the 32-bit 80386 in 1985, cementing Intel's PC dominancewith its processor family's backwards compatibility. Examples of other 16-bit microprocessor families include the Motorola68000 , used in early Apple Macintosh computers; and the Zilog Z8000 . This page needs updating with post-1985 summary µP history In 2003, about 44 billion US$ worth of microprocessors were manufactured and sold [1] . Although about half of that money was spent on CPUs used indesktop or laptop personal computers , those count for only about0.2% of all CPUs sold. About 55% of all CPUs sold in the world are 8-bit microcontrollers . Over2 billion 8-bit microcontrollers were sold in 1997 [2] . Less than 10% of all the CPUs sold in the world are 32-bit or more. Of all the 32-bit CPUs sold, about 2% are used in desktop or laptop personal computers . "Taken as a whole, the average price for amicroprocessor, microcontroller , or DSP is just over $6." [3] Microprocessors and architectures
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microporcessor, bit, icroprocessor, family, microprocessor, cpus, microprcessor, pentium, microprocesso, architecture, microprcoessor, microcontrollers, microprocesosr, zilog, microprocssor, world, mcroprocessor, released, imcroprocessor, first, , computer, microprocsesor, powerpc, microprocessr, iii, mircoprocessor, personal, microrpocessor, architectures, mciroprocessor, links, microproessor, list, microprocessro, microcontroller, micrprocessor, transistors, micoprocessor, dsp, microrocessor, strongarm, micropocessor, opteron, microprocesor, duron, micorprocessor, manufactured, micrporocessor, macintosh, miroprocessor, worth, microproecssor, needs This article is completely or partly from Wikipedia - The Free Online Encyclopedia. Original Article. The text on this site is made available under the terms of the GNU Free Documentation Licence. We take no responsibility for the content, accuracy and use of this article. Anoca.org Encyclopedia 0.03s |