phase shifter circuit

In this project, we will build the heart of a simple 4-bit CPU, the ALU (Arithmetic Logic Unit).

By equipping an Arduino with an Ethernet shield you can turn it into a simple web server, and by accessing that server with a browser running on any computer connected to the same network as the Arduino, you can perform a variety of tasks.

In a world where electronics and embedded systems are becoming increasingly sophisticated, protecting them against theft, piracy, or unauthorized modification is becoming increasingly important for designers and manufacturers.