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Interfacing microcontrollers to external devices
Posted by admin on October 14th, 2007
There can be any external device that may be connected(interfaced) to microcontroller. They may be for control input like buttons, keypads, touch or for information output eg. display, sound, motor, relay, modem. Also output devices may be further chips like transmitters, frequency generators, memory. Interfacing with chips is not that hard because most of all (especially digital ones) are TTL level compliant that allows to connect chips one to another directly. Other wise there are TTL level converter chips if needed – like RS232 to TTL converter MAX232 chip….
Interfacing microcontrollers to external devices - [Link]
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