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图片和视频是用手机拍的，可能不太清楚。

焊接完成：
由于以前没怎么焊接过贴片，焊接的不好看，呵呵。能用就可以了，没有太大要求。。

LED灯闪烁程序
module LED1(clk,rst_n,LED);
//programmed by haohaolinux
input clk,rst_n;
output [7:0] LED;

reg [7:0] LED;
reg [23:0] cnt;

//24 bit counter
always@(posedge clk or negedge rst_n)
if(!rst_n)
cnt = 24'h0;
else if(cnt == 24'hff_ffff)
cnt = 24'h0;
else
cnt = cnt+1;

always@(posedge clk or negedge rst_n)
if(!rst_n)
LED = 8'hff;
else if(cnt[23] == 1'b1)
LED = 8'hff;
else
LED = 8'h00;

endmodule

LED灯闪烁视频

LED跑马灯程序
module LED2(clk,rst_n,LED);
//programmed by haohaolinux
input clk,rst_n;
output [7:0] LED;

reg [7:0] LED;
reg [23:0] cnt;

//24 bit counter
always@(posedge clk or negedge rst_n)
if(!rst_n)
cnt <= 24'h0;
else if(cnt == 24'hffffff)
cnt <= 24'h0;
else
cnt <= cnt+1;

always@(posedge clk or negedge rst_n)
if(!rst_n)
LED <= 8'hff;
else if(cnt == 24'hffffff)
begin
LED <= {LED[6:0],~LED[7]};
if(LED == 8'h00)
LED <= 8'hff;
end
else
LED <= LED;

endmodule

LED跑马灯烁视频

LED流水灯程序
module LED3(clk,rst_n,LED);
//programmed by haohaolinux
input clk,rst_n;
output [7:0] LED;

reg [7:0] LED;
reg [23:0] cnt;

//24 bit counter
always@(posedge clk or negedge rst_n)
if(!rst_n)
cnt <= 24'h0;
else if(cnt == 24'hffffff)
cnt <= 24'h0;
else
cnt <= cnt+1;

always@(posedge clk or negedge rst_n)
if(!rst_n)
LED <= 8'hfe;
else if(cnt == 24'hffffff)
LED <= {LED[6:0],LED[7]};
else
LED <= LED;

endmodule

LED流水灯烁视频

读按键程序
以前发帖，有人说这程序这么说，我有点疑问：能够实现功能，占用的资源越少越好吗？程序越简越好好吗？
module key(key,LED);
//programmed by haohaolinux
 input key;
 output LED;
               
 assign LED=key?1:0;

endmodule