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I just started to working with Proteus and I want to implement and test some simple circuits. I made a subcircuit and tested it with logic state and logic probes.

The first picture is my main sheet and the second picture is the circuit inside subcircuit.

Why don't I get any output from the bottom circuit while I do get output from the top circuit, since they are the same subcircuit?

enter image description here

the subcircuit I made

ocrdu
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Amirhosein Arabhaji
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  • Are there any error messages ? If so please [edit] it into the question. The red colouring of the terminals probably indicate that there is some error. Try searching if any error message is there. – AJN Oct 04 '20 at 17:17
  • first thing that I see is that you may have chosen invalid pin names ... perhaps `a` is not `A` .... also, pay attention to the information in the status bar – jsotola Oct 04 '20 at 17:46

1 Answers1

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OK. after working and digging in the program I found out what was the problem
there is two kind of gates 'AND' gate that is in 'ACTIVE' library
and 'AND_2' gate that is in 'DISMMDLS' (this also includes for other gates)

I should have used the second kind gates that is in 'DISMMDLS' library
I don't know why this happened but this is the solution.

Amirhosein Arabhaji
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