题解 | 求两个数的差值
`timescale 1ns/1ns
module data_minus(
input clk,
input rst_n,
input [7:0]a,
input [7:0]b,
output reg [8:0]c
);
always @(posedge clk or negedge rst_n) begin
if (~rst_n) begin
c <= 0;
end else if (a>b) begin
c <= a - b;
end else if (a<=b) begin
c <= b - a;
end
end
endmodule
查看17道真题和解析