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- Newsgroups: sci.electronics
- Path: sparky!uunet!usc!wupost!darwin.sura.net!mips!news.cs.indiana.edu!umn.edu!doug.cae.wisc.edu!kolstad
- From: kolstad@cae.wisc.edu (Joel Kolstad)
- Subject: Re: Why are 8 bit TTL binary counters so hard to find???
- Organization: U of Wisconsin-Madison College of Engineering
- Distribution: na
- Date: 13 Aug 92 23:18:32 CDT
- Message-ID: <1992Aug13.231832.29191@doug.cae.wisc.edu>
- References: <1992Aug13.212738.26715@julian.uwo.ca> <JON_SREE.92Aug13214342@world.std.com>
- Lines: 16
-
- In article <JON_SREE.92Aug13214342@world.std.com> jon_sree@world.std.com (Jon Sreekanth) writes:
- >
- >Why is it important to get an 8 bit counter in one package, as
- >opposed to tying two 4-bit counters together ?
-
- Here's a good reason: 'Cuz I want to be able to preset it to some number.
- Recently I needed 2 12 bit counters (16 would have been even better, but
- 12 sufficied)... and, of course, nobody makes a double 4-bit (or single 8-bit)
- pressettable counter. Yes, I know this would need >20 pins, but that's OK --
- there are already 22 pin .3" parts out there!
-
- You're right that a PAL/GAL/etc. would work, but I ended up using 6 74LS161s
- instead... 6*.40=2.40 is much cheaper than 3*(>$2)!
-
- ---Joel Kolstad
-
-