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An embedded system is a special-purpose computer system designed to perform one or a few dedicated functions, often with real-time computing constraints. It is usually embedded as part of a complete device including hardware and mechanical parts. In contrast, a general-purpose computer, such as a personal computer, can do many different tasks depending on programming. Embedded systems control many of the common devices in use today.

Since the embedded system is dedicated to specific tasks, design engineers can optimize it, reducing the size and cost of the product, or increasing the reliability and performance. Some embedded systems are mass-produced, benefiting from economies of scale.

Physically, embedded systems range from portable devices such as digital watches and MP3 players, to large stationary installations like traffic lights, factory controllers, or the systems controlling nuclear power plants. Complexity varies from low, with a single microcontroller chip, to very high with multiple units, peripherals and networks mounted inside a large chassis or enclosure.

 

  • Communications server

  • DSP

  • Electronic Control Unit

  • Embedded operating systems

  • Embedded software

  • System on module

  • System on a chip

  • Firmware

 

  • Information appliance

  • Microprocessor

  • Programming languages

  • Real-time operating system

  • Software engineering

  • Ubiquitous computing

  • Cyber-physical system

 

 

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