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From: CSvax:Pucc-H:Physics:hal@pur-ee.UUCP
Newsgroups: net.micro
Subject: Re: Re: Light Pens vs. Mouse - (nf)
Message-ID: <802@pur-phy.UUCP>
Date: Fri, 1-Jul-83 17:05:15 EDT
Article-I.D.: pur-phy.802
Posted: Fri Jul  1 17:05:15 1983
Date-Received: Thu, 7-Jul-83 19:47:32 EDT
Lines: 15

#R:houxm:-45600:pur-phy:7800006:000:557
pur-phy!hal    Jul  1 13:22:00 1983

    The same restrictions hold for a mouse; without something visible on
the screen, you are working blind.  Mouse and lightpen both have to be
connected to something to provide visual feedback.  This can be a cursor
(whether a crosshair, arrowhead, or little finger doesn't mattter), window
edge, rubber band, etc.  Thus you can point to a "blank" area of the screen
with a light pen since the screen isn't truly blank.

    The most convincing argument against the lightpen I have seen so far is
that it may be too tiring for extended use.

Hal
(pur-phy)