how to connect gsm modem to | Microcontroller › 8051 › How to Load program on 89c51 using only tx/rx of rs232 .? help and give software to load file. › how to connect gsm modem to April 24, 2012 at 4:25 pm #7536 kamaalParticipant how to connect gsm modem to serial port using ic 89c51 i need code and circuit
