I think it's fair to say that the joystick may be the first user input device connected to a computer that took us beyond the keyboard - games are far more fun with a stick in our hand than hunting for keys, right? The first joysticks, of course, were simply made up of switches pressed by a plate rnconnected to the stick. Then came analog joysticks which were built up with two potentiometers mechanically linked at a 90-degree angle; one pot for each axis. The original PC joysticks were easy to connect to microcontrollers without hacking. With the proliferation of USB ports, though, analog joystick changed their interface and are no longer microcontroller-friendly. Darn …
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