=Electronics Hardware Questions=

Q: Implement comparator using combinational logic, that compares two 2-bit numbers A and B. The comparator should have 3 outputs: A > B, A < B, A = B.


A1	A0	B1	B0	A>B	B>A	A=B
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0	0	0	0	0	0	1
0	0	0	1	0	1	0
0	0	1	0	0	1	0
0	0	1	1	0	1	0
0	1	0	0	1	0	0
0	1	0	1	0	0	1
0	1	1	0	0	1	0
0	1	1	1	0	1	0
1	0	0	0	1	0	0
1	0	0	1	1	0	0
1	0	1	0	0	0	1
1	0	1	1	0	1	0
1	1	0	0	1	0	0
1	1	0	1	1	0	0
1	1	1	0	1	0	0
1	1	1	1	0	0	1

Here is the behavioral model of the comparator in verilog:

module comp0 (y1,y2,y3,a,b);
 input [1:0] a,b;
 output y1,y2,y3;
 wire y1,y2,y3;

 assign y1= (a >b)? 1:0;
 assign y2= (b >a)? 1:0;
 assign y3= (a==b)? 1:0; 
 
endmodule