Using your computer as a oscilloscope

Discussion in 'Electronics Resources' started by Mathematics!, Aug 1, 2008.

  1. Mathematics!

    Thread Starter Senior Member

    Jul 21, 2008
    oscilloscope are expensive so I thought instead of buying one right now I would start getting familar with the different wave's in my circuits by using my audio port or parallel port. My problem is that I don't know what voltage range a computer sound card is using. I have googled and found some evidence that the line in or mic port is using 0 to 2 volts. But I am still unsure. And I think parallel port uses a standard 0 to 5 volts.

    I would love to find a place that would tell me the standard voltage for different computer ports.

    Like what is the range for serial, parallel, line in, line out , speaker ,...ect
    And is a binary 1 in a computer represented as 5 volts and 0 represented as 0 volts. Their must be a standard to all this or then all computers would
    be not compatible with each other or any add on devices.
  2. bertus


    Apr 5, 2008

    There is software around to turn your soundcard into an oscilloscope.

    More software can be found via this page.

    There is also software for other applications.
    electronics related software: Audio loudspeaker design Circuit simulation & design Digital-PICs Measurement Audio software Digital General Radio frequency
    For more information on connectors and cables for PC's look at this page.