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From: grunwald@uiucdcsm.UUCP
Newsgroups: comp.arch
Subject: Re: how fast could disks be (Mach 1
Message-ID: <3300009@uiucdcsm>
Date: Mon, 17-Aug-87 10:08:00 EDT
Article-I.D.: uiucdcsm.3300009
Posted: Mon Aug 17 10:08:00 1987
Date-Received: Thu, 20-Aug-87 00:58:04 EDT
References: <1189@k.gp.cs.cmu.edu>
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Nf-From: uiucdcsm.cs.uiuc.edu!grunwald    Aug 17 09:08:00 1987


In my supermarket, the 'scanning laser at the checkout line' is operated by
the checkout person passing the product over the laser (usually several times)
at speeds much less than Mach 1.

Are there non-mechanical methods of directing a laser beam? Any pointers to
references?

Dirk Grunwald
Univ. of Illinois
grunwald@m.cs.uiuc.edu