题解 | #优先编码器电路①#
优先编码器电路①
https://www.nowcoder.com/practice/0594ed5303ad48a19aed90bc48839d00
`timescale 1ns/1ns module encoder_0( input [8:0] I_n , output reg [3:0] Y_n ); always @(*) begin casez(I_n) 9'b0???_????? : Y_n = ~4'b1001; 9'b?0??_????? : Y_n = ~4'b1000; 9'b??0?_????? : Y_n = ~4'b0111; 9'b???0_????? : Y_n = ~4'b0110; 9'b????_0???? : Y_n = ~4'b0101; 9'b????_?0??? : Y_n = ~4'b0100; 9'b????_??0?? : Y_n = ~4'b0011; 9'b????_???0? : Y_n = ~4'b0010; 9'b????_????0 : Y_n = ~4'b0001; default : Y_n = ~4'b0000; endcase end endmodule