At last at 10.17 IST I have done it

I am posting the following schematics and asm code for future refrence


ASM file
I have not done much commenting in the code


I just made one major correction from previous ckt

I was using 1 GND for uC and 74HC04 and gnd of another 5V supply to ULN2003

Some one even asked on forum if they were connected or not that's what I tried doing and it worked.
My analysis since th port logics are corresponding to their ground hence all IC ground haveto be same

but one question arises in My mind if I have a 12V relay been driven by ULN then how can I connect the two grounds?

or
only the relay gets the +12V VCC and the other pin to ULN and ULN's (pin 9) goes to 5V gnd ?


Please do clarify my doubts

Bye
Deepak