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From: firstname.lastname@example.org (Michel)
Subject: Re: job: Who can draw or send me a 1/10 second countdown timer?
Date: 18 Dec 2002 02:44:16 -0800
NNTP-Posting-Date: 18 Dec 2002 10:44:16 GMT
Well I don't find any timer like I want it, not even in
And if it is that simple can't anyone send me a diagram? Maybe there
exist even a chip that does it all...7-segment + 1/10 second countdown
+ numberic keyboard reader.
email@example.com (Tim Shoppa) wrote in message news:...
> firstname.lastname@example.org (Michel) wrote in message news:...
> > Well, thanks so far, but let me say what I want ones more...
> > I like to get a digital-electronic circuit-diagram, because I like to
> > build it my own and because of the price of shipment...
> > I also want to see a 3(4)x 7-digit countdown, because sometimes I
> > cover some part of the lighting for a specific time to get the exact
> > result.
> > Also I like to have a number-keyboard because I like to change it more
> > easy and fast.
> > So I was just wordering if there wasn't a IC that does it all,
> > countdown, 7-segment and number-keyboard..... Maybe to much to ask,
> > but still I like to find an easy circuit to build me a digital 999.9
> > second countdown timer.
> > Can't anyone just draw me something like that?
> You're really working in the wrong decade. In the 1970's projects like
> this (along with PCB etching patterns) appeared a couple times a year
> in Radio-Electronics and Popular Electronics. Invariably based around
> 7490's and 7447's :-).
> If you want something like this today - and you are truly incapable of
> even basic design, as you seem to insist - just go buy a Gralab timer
> at your local photographic supplier. See
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