Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!rutgers!mcdchg!illusion!marcus
From: marcus@illusion.UUCP (Marcus Hall)
Newsgroups: sci.space
Subject: Re: GEOS-6 dies.
Message-ID: <380@illusion.UUCP>
Date: 11 Feb 89 05:50:38 GMT
References: <AXrTkzy00UkZI0RUwa@andrew.cmu.edu> <14215@cup.portal.com> <1989Feb9.013228.965@utzoo.uucp> <5352@whuts.ATT.COM>
Reply-To: marcus@illusion.UUCP (Marcus Hall)
Organization: Magic Numbers Software, Bloomingdale, IL
Lines: 14

In article <5352@whuts.ATT.COM> sw@whuts.ATT.COM (WARMINK) writes:
>There must be a good reason why LEDs weren't used - 6 years plus isn't that 
>long ago...anybody know why not?

On the most recent, GEOS-7, the 4 encoder light bulbs were replaced with
two bulbs and two LEDs.  It would seem that this would be done out of some
concern that the LEDs might fail, so there are some light bulbs included.
On the other hand, the LEDs might work fine, in which case two of them should
outlast the light bulbs.  I haven't heard anything about it, so I guess that
everything is working fine.  Thus, I would expect all subsequent GEOS to
use LEDs.

marcus hall
marcus@illusion.UUCP