Physics — Logic: 2-bit equality comparator
Two XNORs and an AND test two 2-bit numbers for equality.
Make it your own.
title "2-bit equality comparator"
type gates
input A0 at (0,0)
input B0 at (0,1.5)
input A1 at (0,3)
input B1 at (0,4.5)
gate XNOR G1 at (3,0.75)
gate XNOR G2 at (3,3.75)
gate AND G3 at (6,2.25)
output Equal at (9,2.25)
wire A0 G1
wire B0 G1
wire A1 G2
wire B1 G2
wire G1 G3
wire G2 G3
wire G3 Equal