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From: jeffe@eniac.seas.upenn.edu (George Jefferson )
Newsgroups: comp.sys.mac.system
Subject: Re: The Mouse -- What is its History?
Message-ID: <30767@netnews.upenn.edu>
Date: 8 Oct 90 20:00:58 GMT
References: <90274.094731ELE@psuvm.psu.edu> <26801@mimsy.umd.edu> <10592@goofy.Apple.COM> <LANNING.90Oct8094334@archer.parc.xerox.com>
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Reply-To: jeffe@eniac.seas.upenn.edu (George Jefferson )
Organization: University of Pennsylvania
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  I should also note that the optical mice developed at PARC, like
  mechanical mice, sense mouse-relative motion, not mouse-pad relative
  motion.  Those of you suffering with Sun optical mice will understand
  and appreciate the difference.


Till now I never quite undestood why my Sun mouse is so awkward to 
use.  I asumed that 'pad relative' motion was an unavoidable 
problem with optical mice.

Which type of relative motion is employed by the A+ mouse?


--

-george   @sol1.lrsm.upenn.edu