Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!sdd.hp.com!hplabs!hpda!hpwala!hp-and!panek From: panek@hp-and.HP.COM (Jon Panek) Newsgroups: sci.electronics Subject: Re: I'm worried about EPROM labels.... Message-ID: <13650003@hp-and.HP.COM> Date: 22 Feb 91 21:45:55 GMT References: <8505.27b915d3@jetson.uh.edu> Organization: HP Andover Division (Massachusetts) Lines: 25 In <8505.27b915d3@jetson.uh.edu>, Larry Liska writes > The recent postings about light-induced bit changes has given me pause. > I am an impoverished student hacker, so I have been using 'appropriated' > file folder adhesive labels to cover my EPROM windows. My question: > are all labels equal, or are there reasons not to continue using thin, > plain paper+adhesive labels? Here at Hewlett-Packard (Andover Division), we use EPROMs regularly to store microprocessor code in our medical products. We cover the quartz windows using standard, adhesive paper labels. As one responder noted, commercial users like to label their EPROMs by printing on the labels with a dot-matrix printer prior to covering the windows. These paper-based labels have proven completely reliable for use in medical products. Do note that these EPROMs are inside closed instruments, and probably never see the light of day. Moral: if your parts are lying on a bench, exposed to flourescent lights, etc, just let your random papers, databooks, schematics, manuals and sandwich wrappers cover them up. That works pretty well, too. Jonathan Panek Hewlett-Packard, Andover Division panek@hp-and.an.HP.COM (508) 687-1501 X-2866 Brought to you by Super Global Mega Corp .com