题解 | #4bit超前进位加法器电路#
4bit超前进位加法器电路
https://www.nowcoder.com/practice/4d5b6dc4bb2848039da2ee40f9738363
`timescale 1ns/1ns
module lca_4(
input [3:0] A_in ,
input [3:0] B_in ,
input C_1 ,
output wire CO ,
output wire [3:0] S
);
wire [3:0] P;
wire [3:0] G;
wire [4:0] C;
assign C[0] = C_1;
assign CO = C[4];
assign P = A_in ^ B_in;
assign G = A_in & B_in;
assign C[4:1] = G | P & C[3:0];
assign S = P ^ C;
endmodule
