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Beyond CMOS ''Beyond CMOS'' refers to the possible future digital logic technologies beyond the CMOS scaling limits〔(Extending the road beyond CMOS. Hutchby 2002 )〕〔(Overview of Beyond-CMOS Devices and A Uniform Methodology for Their Benchmarking )〕〔(Review of Advanced and Beyond CMOS FET Technologies for Radio Frequency Circuit Design. Carta 2011 )〕 which limits device density and speeds due to heating effects.〔(Power-constrained CMOS scaling limits. Frank 2002 )〕 CPUs using CMOS were released from 1986 (e.g. 12 MHz Intel 80386). As CMOS transistor dimensions were shrunk the clock speeds also increased. Since about 2004 CMOS CPU clock speeds have leveled off at about 3.5 GHz. CMOS devices sizes continue to shrink - See Intel Tick-Tock and ITRS - 22nm Ivy Bridge in 2012 and first 14 nanometer processors shipped in Q4 2014. CMOS transistors may not work below 10 nm.〔 See 10 nanometer. ==Some areas of investigation==
* Rapid single flux quantum devices. (rated most promising by NSA in 2005) * Carbon nanotube field-effect transistor * Silicon nanowire FET〔 * Spintronics, various types * Tunnel junction devices, e.g. Tunnel field-effect transistor * Indium antimonide transistors * Photonics, optical computing * Graphene nanoribbons * Molecular electronics
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「Beyond CMOS」の詳細全文を読む
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