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Re: PC parallel port
I have to use parallel port for taking digital inputs. I need eight inputs. I am able to take five inputs from the status port. I know that the data pins (pin 2-9) are bidirectional in nature but I am unable to use them for input. I tried t ogive output through these pins...
Lock in Amplifier
I need to make an amplifier which could amplify very small signals (uV) embedded in noise. The frequency of the signal to be amplified is known. The problem is that the signal has too much noise around it. I was told that a lock-in amplifier can solve the problem but i don't...
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