Before we had the Arduino to control electronics from a PC through USB, I used to build some LPT-based circuits. Today it is easier to just use an Arduino for robotic projects and small circuits. Still it was fun to explore the LPT port, and programming LPT in Delphi.. Before we had microcontrollers like the Arduino, to control electronics from a PC through USB, I used to build some LPT-based circuits. Today it is easier to just use an Arduino for robotic projects and small circuits. Still it was fun to

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