"Tim" wrote in message
...
I am looking for a circuit and software that I once saw in the 1990's. It
had a microphone, a circuit and a serial port output. It converted speech
to serial input to a computer. The software allowed you to play back the
speech. I still have the circuit I built for this, but have long since
lost the software.

Sounds like an A/D converter with serial output. Back in the 1990s, it was
a serial port (RS232) and now it is a USB port.

I think any player that can accept .WAV files would reproduce what you have
recorded. However, without the capture software, I have no idea how to get
the files into your computer.