The parallel port LED indicator when attached with a computer, responds to the signals sent to it by cutting and allowing the power to the LEDs and thus lightning and darkening them. It is interfaced with a computer using the parallel port. It is very useful for training purposes and learning the controlling of signals from a computer to a digital circuit...

The parallel port LED indicator created using a bread board helps understand the basics of designing a digital circuit and the controlling it by connecting to the parallel port of a computer and sending controlled digital signals to it. This circuit come as a result of the thought process we have put to develop the intellectual talent for the industry that must strengthen the roots first...

An Electrical Appliances Controller is a tool that when connected with a computer allows you to control the appliances connected with the circuit by just a press of the key. This very simple designed tool helps helps to simplify the confusing things in your life...