Parallel port logic analyzer
Digitrace is a cool software electronics for hobbyist.You can use your own parallel port to analyze the digital signal by this software.A logic analyzer is a like a recorder for digital signals. During a certain (small) period of time, the state of a few digital lines can be recorded to a file. An event can be specified to signal the start of the recording, i.e. line 1 toggeling from 0 to 1.This recording can be viewed afterwards, allowing for zooming and scrolling in the time domain.Also,In this page a homebuilt logic analyzer is presented.
   Digitrace a Parallel port logic analyzer
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