Welcome to our site! EDAboard.com is an international Electronics Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.
You must check all possible input combinations.
No matter what the function of a combinatorial digital circuit is. AND , NAND, OR, XOR, etc.
The number of input combinations is 2 to the power of number of inputs
i.e:
inputs -> comb
1 -> 2
2 -> 4
3 - > 8
4 - > 16
I once had a whole room of engineers debating whether an XOR or XNOR gate can have more than two inputs. I think it can only have two inputs, but it certainly got some 'expert' engineers scratching their heads for a while!
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.
