Interfacing SIM900d to 16f877

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samustafa

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I am new in sim900d and microcontroller, i cant figure it out how to connect gsm module from 16f877, do i need parallel port or serial and what pins will i use from both sides.
 

You will use serial port.

There is a hardware design manual for sim900d that describes how and what to do.

You should read it.

Just google the manual.
 

Usually GSM modems are connected through UART interface.
 

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