Gates
Problem Statement
Ok, let's try building several logic gates at the same time. Build a combinational circuit with two inputs, a and b.
There are 7 outputs, each with a logic gate driving it:
- out_and: a and b
- out_or: a or b
- out_xor: a xor b
- out_nand: a nand b
- out_nor: a nor b
- out_xnor: a xnor b
- out_anotb: a and-not b
My Solution
module top_module(
input a, b,
output out_and,
output out_or,
output out_xor,
output out_nand,
output out_nor,
output out_xnor,
output out_anotb
);
assign out_and = a & b;
assign out_or = a | b;
assign out_xor = a ^ b;
assign out_nand = ~(a & b);
assign out_nor = ~(a | b);
assign out_xnor = ~ (a ^ b);
assign out_anotb = a & (~b);
endmodule
Note
- a and-not b就是a里面不包含b的部分，就是~b。