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
);
input E1_n ;
input E2_n ;
input E3 ;
output wire Y0 ;
output wire Y1 ;
output wire Y2 ;
output wire Y3 ;
output wire Y4 ;
output wire Y5 ;
output wire Y6 ;
output wire Y7 ;
decoder_38 qq(
.E1_n(1'b0),
.E2_n(1'b0),
.E3(1'b1),
.A0(C),
.A1(B),
.A2(A),
.Y0_n(Y0),
.Y1_n(Y1),
.Y2_n(Y2),
.Y3_n(Y3),
.Y4_n(Y4),
.Y5_n(Y5),
.Y6_n(Y6),
.Y7_n(Y7)
);
assign L=~(Y1 & Y3 & Y6 & Y7);
endmodule
