decoder3to8.v

3-8译码器地简单实现

module decoder3to8(din, reset, dout); 
    input [2:0] din; 
    input reset; 
    output [7:0] dout; 

    reg [7:0] dout; 
    always @(din or reset) begin 
           if(!reset) 
           dout = 8'b0000_0000; 
    else 
           case(din) 
                      3'b000: dout = 8'b0000_0001; 
                      3'b001: dout = 8'b0000_0010; 
                      3'b010: dout = 8'b0000_0100; 
                      3'b011: dout = 8'b0000_1000; 
                      3'b100: dout = 8'b0001_0000; 
                      3'b101: dout = 8'b0010_0000; 
                      3'b110: dout = 8'b0100_0000; 
                      3'b111: dout = 8'b1000_0000; 
           endcase 
    end 

endmodule