Two Ic interface c51 to c51 programming

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your1click

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I'm new for micro-controller and I finish only one simple program, now i want to interface c51 to c51, where I want to use switch in one IC and another IC I want to use relay. I know there is two option for interface 1 is parallel and other is serial, but I tried lots of time but not success, so stop to try, but again I want to try it, so please dear friends help me from starting, coz again I'm Zero,
I attached ckt here which I want to control, please help me.
thanks in advance
 

without seeing your software it's impossible to tell what's wrong.
 

Upload your code here ..
 

your1click said:
yes but I have only basic knowledge abt coding
Click to expand...

So maybe you need more knowledge?

I'm not sure how you expect anybody to help you. You are not asking any useful questions. "I have a board. It doesn't work. Why?" is not going to get you any help.
 

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