There is a serial port behind every computer.

Objective 1

Make a C program to control turn On and turn Off a single LED connected to the serial port of your computer.

Objective 2

Connect two LEDs to the serial port and turn them On and Off alternatively. Just like Diwali lights.

You can actually send 5V to the Serial Port by writing a simple C Program. I will not tell you more, you have to find it out yourself and implement it. It is extremely easy and can be done at home.

You just need couple of wires and fews LEDs, thats it. Post your Program here.