题解 | #4位数值比较器电路#
4位数值比较器电路
https://www.nowcoder.com/practice/e02fde10f1914527b6b6871b97aef86d
(1) 没有采用门级
`timescale 1ns/1ns module comparator_4( input [3:0] A , input [3:0] B , output wire Y2 , //A>B output wire Y1 , //A=B output wire Y0 //A<B ); wire a3_b3; wire a2_b2; wire a1_b1; wire a0_b0; //a3 == b3 assign a3_b3 = (~(A[3]^B[3])); assign a2_b2 = (~(A[2]^B[2])); assign a1_b1 = (~(A[1]^B[1])); assign a0_b0 = (~(A[0]^B[0])); assign Y2 = (A[3] & ~B[3]) || ( a3_b3 & (A[2] & ~B[2]) ) || (a3_b3 & a2_b2 & (A[1] & ~B[1])) || (a3_b3 & a2_b2 & a1_b1 & (A[0] & ~B[0])); assign Y1 = a3_b3 & a2_b2 & a1_b1 & a0_b0; assign Y0 = ~(Y2 | Y1); endmodule
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