Beginner Circuit Diagram Question

Thread Starter

seal308

Joined Jun 30, 2012
11
Hello I designed a circuit that uses adders and made equations for their sum bits.
S0 = 0
S1 = X1
S2 = ...
etc
I've drawn the circuits for S1,S2 etc but what does the S0 = 0 equation look like?
It doesn't have any inputs, is it a wire, and from what?

Thanks
 

WBahn

Joined Mar 31, 2012
29,976
Hello I designed a circuit that uses adders and made equations for their sum bits.
S0 = 0
S1 = X1
S2 = ...
etc
I've drawn the circuits for S1,S2 etc but what does the S0 = 0 equation look like?
It doesn't have any inputs, is it a wire, and from what?

Thanks
You might first as yourself if it makes sense that S0 is always 0. Maybe for your application it does, but whenever an output turns out to be a constant, it is worth asking if that makes sense.
 
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