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From: hughes@endor.harvard.edu (Brian Hughes)
Newsgroups: comp.sys.mac
Subject: Re: EXACT screen refresh rate, and other items
Message-ID: <2141@husc6.UUCP>
Date: Sat, 30-May-87 21:16:09 EDT
Article-I.D.: husc6.2141
Posted: Sat May 30 21:16:09 1987
Date-Received: Tue, 2-Jun-87 00:38:54 EDT
References: <71@wjh12.HARVARD.EDU> <1719@umd5.umd.edu>
Sender: news@husc6.UUCP
Reply-To: hughes@endor.UUCP (Brian Hughes)
Organization: Aiken Computation Lab Harvard, Cambridge, MA
Lines: 7

In article <1719@umd5.umd.edu> zben@umd5.umd.edu.UUCP (Ben Cranston) writes:
> ... The tick is probably used to debounce the button, ...

	I don't have my mac yet, nor IM, nor schematics, so this might
be a dumb question, but - hardware switch debouncing circuits have been
around for longer than micros. You can make one with part of a real
dumb chip. Why does Apple use/need software to debounce the switch ??