Article View: sci.electronics
Article #4424Circut needed
From: W. Le Roy Davis (1-23-90)
Date: Mon, 19 Mar 1990 15:46
Date: Mon, 19 Mar 1990 15:46
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1712 bytes
I am looking for the circut for a very inexpensive three event detector.
I work with the Boy Scouts, and they have this "pine box derby" involving small
(8" long) cars on tracks. They run three at a time. I need an easy to main-
tain circut that detects the cars crossing the finish line and determines 1st,
2nd, and 3rd place. I would like to keep the circutry down to 74xx type chips.
I have had several friends suggest timed circuts, but that is getting too
complex.
E-mail responses would be appreciated as I don't regularly read this column.
Thanks,
Le Roy Davis
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--- /|\ |/ |/ Y | |/ |/ | Y ---
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Technical Details
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<1990Mar19.154615.22362@tree.uucp>Path:
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!news-server.csri.toronto.edu!mailrus!ncar!ames!pacbell!sactoh0!tree!mirandor From: mirandor@tree.uucp (W. Le Roy Davis (1-23-90)) Newsgroups: sci.electronics Subject: Circut needed Summary: three event detector Keywords: inexpensive Message-ID: <1990Mar19.154615.22362@tree.uucp> Date: 19 Mar 90 15:46:15 GMT Reply-To: mirandor@.PacBell.COM (W. Le Roy Davis (1-23-90)) Organization: TREE BBS (916)332-4930 Sacramento, CA Lines: 20