Lalim parallel port control is a software which can control hardware through Printer port (Parallel port). You can also control remote PC parallel port through network. Most of Engineering industry using PC to control hardware with using additional I/O card but with lalim parallel port control you can use your default printer port controlling external device such as switching on/off light or control electronic devices.
What does this program do is, it trigger the parallel port (Printer port) 's data pin by your command. For example when you trigger pin2 , your printer port 's pin2 becomes +5 volt . With this +5volt , you can built your own electronic circuit to drive other external device. You can also built a simple circuit to test it by connect a LED with 1 kohm resistor direct to it pin.
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