i just learning keil c ! but i cannot find the device i use ATMEL AT89S51 when starting new project in work group device list what should i do !!?? i am using KEIL 4
You means keil 4 not supporting 8051 based ?!
Keil has supported 8051 for a huge time - long, long long before they started to support ARM processors and suddenly became "an ARM company".
But since the current version is 5, I wondered why someone who are just starting to learn is starting with an older version.
I will tell you there in Egypt in university laboratory we have the licence for the old version and i know that i could download version 5 trail for free but all assignments must be done by version 4 :D
I would think that it's quite likely the University then already have lots of documentation - especially since the students are then also likely to do their assignments on similar hardware.
The other alternative I was thinking about, was that you had bought some package, where you got a board and a specially licensed version of the Keil tools - in which case there would also be some step-by-step getting-started information available.
Anyway - this site has lots of documentation that you might want to browse through. There is documentation about the IDE. The debugger. How to get started. How to build...
Get your professors to do their JOB, and provide you with instruction and templates you need to do your course work. I'm not sure when this half-arsed level of education was acceptable, but hold them to higher standards and accountability.