microprocessors with integrated memory and peripheral interfaces), but ordinary microprocessors (using external chips for memory and peripheral interface circuits) are also common, especially in more complex systems. Modern embedded systems are often based on microcontrollers (i.e. In 2009, it was estimated that ninety-eight percent of all microprocessors manufactured were used in embedded systems. Embedded systems control many devices in common use today. It is embedded as part of a complete device often including electrical or electronic hardware and mechanical parts.īecause an embedded system typically controls physical operations of the machine that it is embedded within, it often has real-time computing constraints. An embedded system on a plug-in card with processor, memory, power supply, and external interfacesĪn embedded system is a computer system-a combination of a computer processor, computer memory, and input/output peripheral devices-that has a dedicated function within a larger mechanical or electronic system.
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