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'{{Unreferenced|date=July 2010}} A '''computer-on-module''' ('''COM''') is a type of [[single-board computer]] (SBC), a subtype of an [[embedded computer]] system. It is also called '''System on Module''' (SOM) as an extension of the concept of [[System on Chip]] (SoC) and lying between a full-up computer and a microcontroller in nature. Today's COM/SOM modules are complete [[computer]]s built on a single [[circuit board]]. The design is centered on a single [[microprocessor]] with [[RAM]], [[input/output]] controllers and all other features needed to be a functional computer on the one board. However, unlike a single-board computer, the COM module will usually lack the standard connectors for any input/output peripherals to be attached directly to the board. Instead, the wiring for these peripherals are bussed out to connectors on the board. The module will usually need to be mounted on a carrier board (or "baseboard") which breaks the bus out to standard peripheral connectors. Some COMs also include peripheral connectors and/or can be used without a carrier. A COM/SOM solution offers a dense package computer system for use in small or specialized applications requiring low power consumption or small physical size as is needed in [[embedded system]]s. Some devices also incorporate [[Field Programmable Gate Array]]s. The terms "Computer-on-Module" and "COM" were coined by VDC Research Group, Inc. (formerly Venture Development Corporation) (Natick, MA, USA) to describe this class of embedded computer boards. The term became more notable upon industry standardization of the [[COM Express]] format. [[Image:Overo_with_coin.jpg|thumb|[[Gumstix]] Overo COM, a tiny, [[OMAP]]-based [[COM]].]] [[Image:Techor-SystemModule-thumb.jpg|thumb|[[SOM]], [[OMAP]]/ [[Marvell]]/[[ARM Cortex-A8|Coretex-A8]]-based [[COM]]]] == See also == [[File:ESOM270 eSOM300 Computer on Modules.jpg|thumb|e-con Systems eSOM270 & eSOM300 Computer on Modules]] * Computer-on-module types ** [[ETX Form Factor|ETX]] ** [[XTX]] ** [[CoreExpress]] ** [[COM Express]] ** [[Embedded System Module|ESM]] ** [[ESMexpress]] ** [[ESMexpress|ESMini]] ** [[Qseven]] ** [[System-on-Module|SOM]] * [[Computer]] * [[Embedded system]] * [[Microcontroller]] * [[Embedded microprocessor]] [[Category:Microcomputers]] [[Category:Embedded systems]] [[ja:Computer on Module]] ==External links== *[http://www.dsl-ltd.co.uk/products.aspx?Category=Mini%20System%20on%20Module/ Datasound Laboratories Ltd.]'