hai dear friends, iam a beginner in embed c so please help me in writing a program for counting the external pulses given in pin 3.4 and move the counted pulse value to p1 showing their hex value in leds. the timer should run for only 1 sec. this process should run continuously. thank you
Was it your teacher who sent you here?
To get extra help because the school is too bad to manage to give the proper background knowledge?
Can't you post the name of the school, so other people can avoid it?
Do you already know "normal" C?
If not, learning the 'C' programming language must be your first step:
http://bit.ly/X5Atml
You will also need to understand the 8051 architecture. It is an extremely long-established and widely-used architecture - there is no shortage of resources; eg:
www.8052.com/.../120112
www.8052.com/.../tutorial
http://www.keil.com/books/8051books.asp
In addition to the general 8051 architecture, you will need to understand the specific details of the particular chip(s) you are using - for this, you will have to study the Manufacturer's Datasheets. You should also take time to browse the Manufacturer's website for supporting materials - application notes, examples, tutorials, etc.
You will also need to study the Keil manuals for the implementation-specific details particular to the C51 tools:
http://www.keil.com/support/man_c51.htm
You should also take time to browse the Keil website for supporting materials - application notes, examples, tutorials, etc.
And, of course, don't forget the resources at your school - teachers, lesson notes, library, etc.
Not to mention google...