题解 | #简易秒表#

比较简单。注意second 和 minute的改变条件；以及最终停止计时。

`timescale 1ns/1ns

module count_module(
	input clk,
	input rst_n,

    output reg [5:0]second,
    output reg [5:0]minute
	);
	
	always@(posedge clk or negedge rst_n)begin
		if(!rst_n)
			second <= 0;
		else if(minute==60)begin
			second <= 0;
		end
		else 
			second <= second==60? 1:second+1;
	end
	
	always@(posedge clk or negedge rst_n)begin
		if(!rst_n)
			minute <= 0;
		else if(minute==60) begin
			minute <=60;
		end
		else 
			minute <= second==60? minute+1:minute;
	end

endmodule