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Microcontroller

A microcontroller is an integrated circuit that may be used to control a wide range of electrical and mechanical appliances. Microcontrollers provide programmable control of peripheral devices connected to them. A microcontroller has a standard hardware design that is customized for a particular implementation by programming the firmware for a specific application. Microcontrollers have the advantage of combining relatively inexpensive, generic hardware with specialized firmware to provide cost-effective custom designs for many different applications. Microcontrollers have become popular integrated circuits due to their versatility in applying computer controlling all types of devices. Microcontrollers are commonly employed as a primary control chip in a wide variety of non-computer products such as printers, cellular phones, televisions, and automobiles. Modern microcontrollers incorporate a processor core and communications cores, as well as incorporate other commonly-employed device circuitry, such as blocks of memory and programmable timers. A microcontroller typically includes a processor or control unit, input/output units, and embedded memory, such as random access memory (RAM) and read only memory (ROM). Microcontrollers implemented in controlled devices, such as, computer peripherals and consumer electronics, are connected via an external bus to an external memory.

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