题解 | #实现3-8译码器①#

实现3-8译码器①

https://www.nowcoder.com/practice/89659f98cb124362b1c816f06d5235d0

`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 = 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

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