i have just started learning C and now i want to know the procedure to interface a C program in keil software Thank You
"i have just started learning C" On what platform? "to interface a C program in keil software" I don't understand this question - what exactly do you mean by that? Do you already know the 8051 architecture? You should download the free Keil C51 evaluation version, and work through the example Projects in the uVision Getting Started guide. There are also plenty of other examples included with the evaluation, and more in the downloads section of this site. You will need to read the C51 Compiler Manual to learn and understand the specific features of Keil C51 which enable you to take full advantage of the 8051 architecture. Thre is a bibliography on this site of books about programming the 8051.