embedded system

Also found in: Dictionary, Thesaurus, Medical, Legal, Financial, Wikipedia.

embedded system

[em′bed·əd ′sis·təm]
(computer science)
A computer system that cannot be programmed by the user because it is preprogrammed for a specific task and embedded within the equipment which it serves.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

embedded system

Hardware and software which forms a component of some larger system and which is expected to function without human intervention.

A typical embedded system consists of a single-board microcomputer with software in ROM, which starts running some special purpose application program as soon as it is turned on and will not stop until it is turned off (if ever).

An embedded system may include some kind of operating system but often it will be simple enough to be written as a single program. It will not usually have any of the normal peripherals such as a keyboard, monitor, serial connections, mass storage, etc. or any kind of user interface software unless these are required by the overall system of which it is a part. Often it must provide real-time response.

Usenet newsgroup: news:comp.arch.embedded.
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)

embedded system

Any electronic system that uses a computer chip, but that is not a general-purpose workstation, desktop or laptop computer. Such systems use microcontrollers (MCUs) or microprocessors (MPUs), or they may use custom-designed chips. Deployed by the billions each year in myriad applications, the embedded systems market uses the lion's share of electronic components in the world.

Embedded systems are employed in cars, planes, trains, space vehicles, machine tools, cameras, consumer electronics, office appliances, network appliances, cellphones, GPS navigation as well as robots and toys. Low-cost consumer products can use microcontroller chips that cost less than a dollar. See microprocessor and microcontroller.

All Kinds of Operating Systems
There are embedded versions of Linux, Windows and Mac, as well as other specialized operating systems. Embedded systems typically have limited storage, and an embedded OS is often designed to work in much less RAM than a desktop OS. They also typically work in real time. Small embedded systems may contain their own input/output routines and not require a separate operating system at all.

Programs Are in Firmware
In embedded systems, the software typically resides in firmware, such as a flash memory or read-only memory (ROM) chip, in contrast to a general-purpose computer that loads its programs into random access memory (RAM) each time.

Sometimes, single board and rack mounted general-purpose computers are called "embedded computers" if used to control a single printer, drill press or other such device. See embedded market, smart car, Windows CE, Windows XP Embedded, Embedded Linux and embedded language.

Embedded Systems in a Car
In 1968, Volkswagen used a microprocessor to control the fuel injection, making it the first embedded system in a car. Thirty years later, the Volvo S80 featured 17 systems controlled by a computer (the list above). Today's cars can have a hundred or more CPUs, and the electronics cost more than the steel.

Embedded in a Shoe!
The microprocessor in this sneaker calculates the pressure between the runner's foot and the ground five million times per second and continuously adjusts the comfort level (a motor lengthens and shortens a cable attached to a plastic cushioning element). (Image courtesy of adidas-Salomon AG.)
Copyright © 1981-2019 by The Computer Language Company Inc. All Rights reserved. THIS DEFINITION IS FOR PERSONAL USE ONLY. All other reproduction is strictly prohibited without permission from the publisher.
References in periodicals archive ?
Although Linux containers have been widely deployed in data centers and IT environments, without easy-to-use pre- integrated platforms or meaningful engagement across the ecosystem, container use has been scarce in small-footprint and long-lifecycle edge embedded systems. With this release, Wind River Linux removes the difficulties and lowers the barrier of entry for container usage in embedded software projects for a diverse range of applications including industrial control systems, autonomous vehicles, medical devices and equipment, Internet of Things (IoT) gateways, Radio Access Network (RAN) products, and a wide range of network appliances.
Based on the previous description, the hyperrectangle model of energy consumption for embedded system with two tasks can be defined in the following.
In this paper, to facilitate the existing record process in the power plant, we develop a field inspection management system based on embedded systems and wireless sensor networks.
The robotic-based applications come as a complement to the material found in theoretical-orientated embedded system books, such as Marwedel [29], Wolf [30], and Vahid and Givargis [31].
Embedded systems were incorporated into commercial automobiles around the 1970s.
Because there are numerous technical and practical considerations for embedded system security, the best starting point is an individual discussion with application specialists who can recommend a range of hardware, software, and services--usually a distributor or a value-added reseller (VAR) with expertise in embedded systems.
A further help is the emergence of high level embedded system design tools: the combination of all of these factors is to take away many of the low-level tasks involved in embedded system design, paring the team down and maintaining the focus.
16 days left for the 6th edition of Embedded Systems Conference India.
Additionally, software stored in an embedded system may not be correct if the tools necessary to configure, compile and download the software do not function as expected.
The specification is designed to benefit server OEMs and motherboard manufacturers by providing a common interface standard for embedded system management that helps reduce platform development risk, cost, and time to market.
With the addition of BlueCat Embedded Linux support, Vibren now provides a comprehensive developer's kits for embedded system design.

Full browser ?