An electronic system comprising of a processor or microcontroller with necessary circuitry and external peripherals like memory, ADC, sensor, motors, LCD etc , all embedded into one single board designed to perform a specific task is called an embedded system. The size and complexity of the embedded system varies from application to application. The processor/microcontroller used is the heart of any embedded system. It is programmed to perform the desired task and can also be reprogrammed for other application.
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