GSM modem interfacing with 89c51

I am able to send msg through GSM modem. But i am not able to read msg. Somebody plz help me.
GSM modem interfacing with 89c51

I am able to send msg through GSM modem. But i am not able to read msg. Somebody plz help me.
how to work the 89C51 with a switch

hi I am pretty much new with the 89C51 (atmel 89C51). I am trying to turn on LED with the switch. I can turn on one LED but when i try to turn on two LED it does not work. Right now both the LED turns...
how to work the 89C51 with a switch

hi I am pretty much new with the 89C51 (atmel 89C51). I am trying to turn on LED with the switch. I can turn on one LED but when i try to turn on two LED it does not work. Right now both the LED turns...
interfacing of gsm modem to 89c51

i want to interface gsm modem to 89c51... Can anybody pleeeeeezzz provide me the "code" and the interfacing "circuit diagram"...