//译码模块
module xianshi(input [3:0]xs,output reg [6:0]l);
always @ (xs)
begin
case(xs)
4'b0000: l<=7'b111_1110;
4'b0001: l<=7'b011_0000;
4'b0010: l<=7'b110_1101;
4'b0011: l<=7'b111_1001;
4'b0100: l<=7'b011_0011;
4'b0101: l<=7'b101_1011;
4'b0110: l<=7'b101_1111;
4'b0111: l<=7'b111_0000;
4'b1000: l<=7'b111_1111;
4'b1001: l<=7'b111_1011;
4'b1010: l<=7'b111_0111;
4'b1011: l<=7'b001_1111;
4'b1100: l<=7'b100_1110;
4'b1101: l<=7'b011_1101;
4'b1110: l<=7'b100_1111;
4'b1111: l<=7'b100_0111;
default: l<=7'b000_0000;
endcase
end
endmodule
//LED显示模块
module show(control,L1,L2,L3,L4,clk,cout,dig);
input clk;
input [1:0]control;
input[6:0] L1,L2,L3,L4;//定义4个数码管
output reg [6:0]cout;
output reg[2:0]dig;
reg[16:0]s;
reg[3:0]temp;
wire[6:0]tempe;
initial temp = 4'b0000;
initial s<=1;
always @(negedge clk)
begin
if(s<40)
begin
s<=s+1;
temp<=temp+1;
if(s%10==0)
temp<=0;
end
else
begin
s<=1;
end
end
xianshi x(temp,tempe);
always @ (s)
begin
if(s<=10)
begin
dig = 3'b000;
if(control==2'b00|control==2'b11)
cout = L1;
else if(control==2'b01)
cout = 7'b111_1110;
else if(control==2'b10)
cout = tempe;
end
if(s>10&s<=20)
begin
dig = 3'b001;
if(control==2'b00|control==2'b11)
cout = L2;
else if(control==2'b01)
cout = 7'b111_1110;
else if(control==2'b10)
cout = tempe;
end
if(s>20&s<=30)
begin
dig = 3'
西南交大计算机组成原理考试大纲 西南交大计算机组成原理实验二七段LED数码管显示译码器的设计.docx...
