Sir will you help me in interfacing of gsm,gps with at89s52? Since most of the students hav done this project using microcontroller is using arm 7 more portable for interfacing gsm ,gps as it has usb connection also ,
for gps you need to understand NMEA protocol. You will get the details just by googling. For GSM you need to know about at commands. That also get by searching the internet.