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. 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. Using this circuit a programmer can learn to control the signals
by knowing how a single change effects the outcome in real time. The blowing and
darkening of LEDs on the prorammers command give him an insight of how digital outputs
can be achieved.
