I have an old lab device and I'm looking for the way to connect it to PC. It's all about reading the voltage 0 - +10 mV. Recently I've connected the stuff with the Mic-In on the soundcard, but that was not what I wanted, because the wave signal is sinusoidal.
Is it possible to use the COM port for this purpose directly?
Are there any procedures in Delphi, that allow to measure the voltage on the pins?
If you have any ideas or experience with such subject, please help me.