Notgate
From HDLBits
Create a module that implements a NOT gate.
This circuit is similar to wire, but with a slight difference. When making the connection from the wire in to the wire out we're going to implement an inverter (or "NOT-gate") instead of a plain wire.
Use an assign statement. The assign statement will continuously drive the inverse of in onto wire out.
Expected solution length: Around 1 line.
Module Declaration
module top_module( input in, output out );