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From: sukenick@ccnysci.UUCP (George Sukenick)
Newsgroups: net.auto
Subject: Re: 'Shift lights'
Message-ID: <153@ccnysci.UUCP>
Date: Wed, 31-Jul-85 08:27:57 EDT
Article-I.D.: ccnysci.153
Posted: Wed Jul 31 08:27:57 1985
Date-Received: Fri, 2-Aug-85 06:16:17 EDT
Organization: City College of New York
Lines: 23

(Ref: some articles a little while ago about 'idiot lights' that
 tell you when to shift gears.....)

I happened to come across this: (while catching up on my reading:-))

	Popular Mechanics (June 1979) had an article about building
a device that indicates when gears should be shifted. 
Actually there are 3 lights: green for 'get ready', yellow for
'shift now' and red for 'you missed it'.(Great! 3 idiot lights :))

	It is possible to set the RPM switch points for each light
so that it can be optimized for your vehicle .

	The article claims that these lights can be used to teach
operation of a manual shift and that it is useful in automatics for
monitoring transmission slippage .

	The circuit consists of 1 IC (CMOS AND 4081) and a few dozen
other small components.

					GDS