4-bit, 4 input (A,B,C,D) Magnitude Comparator Circuit

Thread Starter


Joined May 14, 2012
Is there a way to design a 4-bit, 4 input (A,B,C,D) Magnitude comparator without resorting to a Mircoprocessor/controller? I note that there are 2 input (A,B) magnitude comparators available such as the DM74LS85, but cannot see a way to design a 4 input version. Any suggestions?
Reason for question is that I'm trying to design a position indicator for a 4 lane slot car setup, so that car coming first with most laps shows a Position 1 indicator for its lane, car with the next most laps gets a position 2 indicator and so on.
Thanks in advance for your input.