will u please tell me about int of c51
I am sorry, but I am unable to determine what kind of information you are requesting.
"int routine" ?
"int" as in ... "integer" ? "integral" ? "integrated" ? "interrupt" ?
Please specify in more detail what you are looking for.
and what do you mean by "C51"
- the Keil compiler product, C51?
- an abbreviation for 89C51 (which, itself, is not a complete part number)?
- a general abbreviation for the "8051" architecture?
- a Structural Steel Contractor licence in the state of California: www.cslb.ca.gov/.../c51.asp
If we assume this is about the Intel 8051 architecture, and Keil's tools that support it, then you need to read the following:
The Keil Manuals: http://www.keil.com/support/man_c51.htm
The so-called "bible" for the 8051 architecture:
Chapter 1 - 80C51 Family Architecture: www.nxp.com/.../80C51_FAM_ARCH_1.pdf
Chapter 2 - 80C51 Family Programmer's Guide and Instruction Set: www.nxp.com/.../80C51_FAM_PROG_GUIDE_1.pdf
Chapter 3 - 80C51 Family Hardware Description: www.nxp.com/.../80C51_FAM_HARDWARE_1.pdf
And, of course, the Datasheet for the particular chip you are (considering) using.