Definitions of Embedded system on the Web:

 

• A combination of computer hardware and software, and perhaps additional mechanical or other parts, designed to perform a dedicated function. In some cases, embedded systems are part of a larger system or product, as in the case of an antilock braking system in a car. Contrast with general-purpose computer.
  www.netsilicon.com/support/embeddedglossary.jsp

• A specialized computer system which is dedicated to a specific task. Embedded systems range in size from a single processing board to systems with operating systems (ex, Linux, Windows® NT Embedded). Examples of embedded systems are medical equipment and manufacturing equipment.
  www.systemsoft.com/l-2/l-3/support-glossary.htm

• A computer system that is a component of a larger machine or system. Embedded systems can respond to events in real time. Most digital appliances, such as watches or cars, utilize an embedded system.
  www.keep-talking.net/glossary.htm

• Hardware and software that forms a component of some larger system and is expected to function without human intervention. Typically an embedded system consists of a single-board microcomputer with software in ROM, which starts running a dedicated application as soon as power is turned on and does not stop until power is turned off.
  techpubs.sgi.com/library/tpl/cgi-bin/getdoc.cgi

• An embedded system is some combination of computer hardware and software, either fixed in capability or programmable, that is specifically designed for a particular kind of application device. Industrial machines, automobiles, medical equipment, cameras, household appliances, airplanes, vending machines, and toys (as well as the more obvious cellular phone and PDA) are among the myriad possible hosts of an embedded system. ...
  www.caps-entreprise.com/en/glossaire_contenu.html

• A phrase that refers to a device that contains computer logic on a chip inside it. Such equipment is electrical or battery powered. The chip controls one or more functions of the equipment, such as remembering how long it has been since the device last received maintenance.
  www.ucsf.edu/y2k/toolkit/gloss.html

• An embedded system is a special-purpose computer system, which is completely encapsulated by the device it controls.An embedded system has specific requirements and performs pre-defined tasks, unlike a general-purpose personal computer.
  en.wikipedia.org/wiki/Embedded_system

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