Technology Embedded


An embedded system is a microprocessor-based device with an operating system built in. The operating system is designed to perform specific tasks very quickly and reliably. An embedded system is a computer system designed for specific control functions within a larger system, often with real-time computing constraints. It includes hardware and mechanical parts.

 


Embedded systems are found in devices like greeting cards, toys, cell phones or PDA, MP3 players, car, and traffic lights.
Embedded systems using 128-bit processors are used in satellites, aircraft guidance systems, air traffic control systems and nuclear power plants.

PC is not an embedded system, as it runs on an operating system that is installed. Since embedded systems are designed to run for years even decades at a time, embedded systems often require no updates. Embedded systems contain processing cores that are typically either microcontrollers or digital signal processors (DSP).  As embedded system is dedicated to specific tasks, design engineers can optimize it to reduce the size and cost of the product and increase the reliability and performance. Some embedded systems are mass-produced, benefiting from economies of scale.

  1. Embedded systems are designed to do some specific task, rather than be a general-purpose computer for multiple tasks. Some also have real-time performance constraints that must be met, for reasons such as safety and usability; others may have low or no performance requirements, allowing the system hardware to be simplified to reduce costs.
  2. Embedded systems are not always standalone devices. Many embedded systems consist of small, computerized parts within a larger device that serves a more general purpose.
  3. The program instructions written for embedded systems are referred to as firmware, and are stored in read-only memory or Flash memory chips. They run with limited computer hardware resources: little memory, small or non-existent keyboard or screen.
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