题解 | #使用3-8译码器①实现逻辑函数#
使用3-8译码器①实现逻辑函数
https://www.nowcoder.com/practice/be81e76ebade445baca7257aa4eca8f2
`timescale 1ns/1ns module decoder_38( input E1_n , input E2_n , input E3 , input A0 , input A1 , input A2 , output wire Y0_n , output wire Y1_n , output wire Y2_n , output wire Y3_n , output wire Y4_n , output wire Y5_n , output wire Y6_n , output wire Y7_n ); wire E ; assign E = E3 & ~E2_n & ~E1_n; assign Y0_n = ~(E & ~A2 & ~A1 & ~A0); assign Y1_n = ~(E & ~A2 & ~A1 & A0); assign Y2_n = ~(E & ~A2 & A1 & ~A0); assign Y3_n = ~(E & ~A2 & A1 & A0); assign Y4_n = ~(E & A2 & ~A1 & ~A0); assign Y5_n = ~(E & A2 & ~A1 & A0); assign Y6_n = ~(E & A2 & A1 & ~A0); assign Y7_n = ~(E & A2 & A1 & A0); endmodule module decoder0( input A , input B , input C , output wire L ); wire [7:0] Y; decoder_38 inst_decoder_38( .E1_n(1'b0), .E2_n(1'b0), .E3(1'b1), .A2(A), .A1(B), .A0(C), .Y7_n(Y[7]), .Y6_n(Y[6]), .Y5_n(Y[5]), .Y4_n(Y[4]), .Y3_n(Y[3]), .Y2_n(Y[2]), .Y1_n(Y[1]), .Y0_n(Y[0]) ); assign L = ~(Y[7]&Y[6]&Y[3]&Y[1]); endmodule