Editing Computer (section)

===Microprocessors===
{{Main|Central processing unit}}

The first single-chip microprocessor [[central processing unit]] was the Intel 4004.<ref>{{harvnb|Intel_4004|1971}}</ref> It originated in Japan with the "Busicom Project"<ref name="ieee">Federico Faggin, [http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=4776530 The Making of the First Microprocessor], ''IEEE Solid-State Circuits Magazine'', Winter 2009, IEEE Xplore</ref> as [[Masatoshi Shima]]'s three-chip CPU design in 1968,<ref name=tout1>{{cite web|url=http://www.vintagecalculators.com/html/busicom_141-pf_and_intel_4004.html|title=The Busicom 141-PF calculator and the Intel 4004 microprocessor|author=Nigel Tout|accessdate=November 15, 2009}}</ref><ref name="ieee"/> before [[Sharp Corporation|Sharp]]'s [[Tadashi Sasaki]] conceived of a single-chip microprocessor, which he discussed with [[Busicom]] and [[Intel]] in 1968.<ref name="sasaki">{{cite web |url        = http://www.ieeeghn.org/wiki/index.php/Oral-History:Tadashi_Sasaki |title      = Oral-History: Tadashi Sasaki |last       = Aspray |first      = William |date       = 1994-05-25 |work       = Interview #211 for the Center for the History of Electrical Engineering |publisher  = The Institute of Electrical and Electronics Engineers, Inc. |accessdate = 2013-01-02}}</ref> The Intel 4004 was then designed and realized as a single-chip 4-bit microprocessor in 1970, by Intel's Federico Faggin and Busicom's Masatoshi Shima.

The first 8-bit microprocessor was the Intel 8008 in 1972. It was followed in 1974 by the Intel 8080, a more general-purpose 8-bit microprocessor designed by Federico Faggin and Masatoshi Shima.

The first single-chip 16-bit microprocessor was introduced in 1975. [[Panafacom]], a conglomerate formed by Japanese companies [[Wikipedia:Fujitsu|Fujitsu]], [[Wikipedia:Fuji Electric|Fuji Electric]], and [[Wikipedia:Panasonic|Matsushita]], introduced the MN1610, a commercial 16-bit microprocessor.<ref>{{cite web|title=16-bit Microprocessors|url=http://www.cpu-museum.com/161x_e.htm|publisher=CPU Museum|accessdate=5 October 2010}}</ref><ref name="fujitsu">http://www.pfu.fujitsu.com/en/profile/history.html</ref><ref>[http://museum.ipsj.or.jp/en/heritage/PANAFACOM_Lkit-16.html PANAFACOM Lkit-16], Information Processing Society of Japan</ref> According to Fujitsu, it was "the world's first 16-bit microcomputer on a single chip".<ref name="fujitsu"/>