here while doing it i need the source code for serial.c ... kindly help
Sorry but you have big issues if you get stuck directly at getting working serial communication.
By the way - you don't think Google have a thousand or two projects containing serial communication with a 8051 processor?
i was writing a program in atmel which contain #include serial.c where this program is missing in my keil compiler can you post me the program or link
"...in atmel..."
What do you mean by, "in atmel"?
"...which contain #include serial.c"
If you really wrote this program, then that would only be there because you wrote it there!
Presumably, then, you didn't actually write this program at all - you have just copied it from somewhere?
Note that #include-ing a '.c' file is not the usual thing to do at all - so it may well be preferable to find some better-written code to copy...
"this program is missing in my keil compiler "
What makes you think that it should be included?
If you want Keil examples, see: http://www.keil.com/download/file/
Also look in the C51\Examples folder in your Keil installation...
"can you post me the program or link"
There is no way to tell the content of a file just from its name; it is impossible to know which particular "serial.c" your program requires!
The documentation for the program that you're coying should tell you details like where to find this file.
Pnetec systems provides Vehicle and driver tracking system provides live GPS tracking that enables up to the minute information regarding your fleet vehicles and drivers. The easy-to-use web interface allows the most convenient way to continuously track, get stop times, set geofences, set speed limit alerts, and always instantly know where your trucks and drivers are located.
Pnestec systems also helps in project building