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Article #3602Re: Monitoring Digital Levels with an LED
From: David Geiser
Date: Wed, 01 Nov 1989 19:36
Date: Wed, 01 Nov 1989 19:36
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Quick and Dirty: Let the outputs drive the base of a small transistor which will turn on the LED. You might want to add a capacitor time delay in the base circuit to slow down the rate at which the transitor is turned off after it is turned on. Otherwise, the pulses may be too narrow to see. Hmmm, looks like I've just described a one-shot (retriggerable would be nice).
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arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!cs.utexas.edu!samsung!usc!ucsd!ucbvax!hplabs!hpfcso!hpldola!hp-lsd!dagReferences:
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!cs.utexas.edu!samsung!usc!ucsd!ucbvax!hplabs!hpfcso!hpldola!hp-lsd!dag From: dag@hp-lsd.COS.HP.COM (David Geiser) Newsgroups: sci.electronics Subject: Re: Monitoring Digital Levels with an LED Message-ID: <7600029@hp-lsd.COS.HP.COM> Date: 1 Nov 89 19:36:16 GMT References: <9640@june.cs.washington.edu> Organization: HP Logic Systems Division - ColoSpgs, CO Lines: 8