题解 | #Johnson Counter#
Johnson Counter
https://www.nowcoder.com/practice/7ee6e9ed687c40c3981d7586a65bc22d
`timescale 1ns/1ns
module JC_counter(
input clk ,
input rst_n,
output [3:0] Q
);
reg [7:0] jorson_cnt_reg;
always @( posedge clk or negedge rst_n )
begin
if( !rst_n )
jorson_cnt_reg <= 8'hf0;
else
jorson_cnt_reg <= {jorson_cnt_reg[0], jorson_cnt_reg[7:1]};
end
assign Q = jorson_cnt_reg[3:0];
endmodule
查看4道真题和解析
