Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sun-barr!olivea!uunet!mcsun!ukc!edcastle!ecwu61
From: ecwu61@castle.ed.ac.uk (R Renwick)
Newsgroups: comp.sys.acorn
Subject: Re: Archimedes keyboard
Message-ID: <8729@castle.ed.ac.uk>
Date: 26 Feb 91 12:24:07 GMT
References: <$0`&80+@warwick.ac.uk> <1991Feb23.211436.7855@vax1.tcd.ie> <1991Feb25.161054.6477@cl.cam.ac.uk>
Organization: Edinburgh University
Lines: 25

In article <1991Feb25.161054.6477@cl.cam.ac.uk> bdb@cl.cam.ac.uk (Brian Brunswick) writes:
>[Many people muttering about mice, using other mice]
>
	[ STUFF DELETED ]

>I saw a completely WONDERFUL DESIGN on a mouse on a Decstation 3100...
>It had two entirely separate rollers underneath, each angled with its
>axis just off vertical, arranged so that one had an edge touching the
>desk up/down and one across. Bingo! No gunge, Only ONE place to slip
>instead of two..  Pity the mouse itself is circular... (Yuch)

	Sun mice are even better in my opinion.  They have no moving
parts at all!!  They use a special mouse mat which is made up of
criss-crossed lines.  The vertical ones reflect ordinary light and the
horizontal reflect infra red.  The mouse itself has 2 holes underneath
and each hole has a led (transmitter) and some sort of receiver.  One
led is infra red and the other is ordinary.
	This allows the mouse to last for a very long time and needs
absolutely no cleaning what so ever.  The are used continuously by all
of the 3rd and 4th year computer science students at Edinburgh Uni. and
they very rarely give any bother.
	The only problem is that our monitor screens are cleaned as
often as our mice. :-(

Rik