I am new to code I am using processor .When I program the program is running when micro controller is inserted in parallel port programmer. But when I remove it from programmer and use it simple testing board does not work.What is problem.
You will have to bare with us. It sounds as if you have compiled a program and programmed it to a chip and it doesn't do anything?
You tested the program using a simulator first?
So .. could you give more detail as to what processor you are using (there are 100's of c51's out there) IE part # and manufacturer.
If you could give details of what the processor is connected to and how you power it etc that would help immensely. Help people here help you.
The obvious: Did you check the settings in the compiler are for the specific processor, and if they are correct for the system? Is there power to the system the processor is in? Does the system require the processor to latch the power on to stay on? If yes do you have a well defined process for turn on with the processor etc?
Stephen
yes .I now fixed the problem. i must put voltage on board and i See it work.
Yes, turning it ON usually helps...!