>-----Original Message----- >From: piclist-bounces@mit.edu [mailto:piclist-bounces@mit.edu] >On Behalf Of Tony Smith >Sent: 23 May 2007 15:21 >To: 'Microcontroller discussion list - Public.' >Subject: RE: [EE]: Digital voltmeter from 1960 > > >> >A real gem. Pity there is no schematic available: >> > >> > http://www.wps.com/projects/instruments/Cubic-V45/index.html >> > >> >Peter P. >> > >> Fascinating instrument, a real gem as you say. I'm not sure >> I agree with the authors suggestion that "Display technology >> has improved only slightly" though! >> >> Regards >> >> Mike > > >What to do when Nixies haven't been invented yet. Years ago I >came across Nixies, and figured I could emulate the display >by, you guessed it, etching numbers in glass, edge lit & >stacked. Worked nicely as a clock, and I was suitably chuffed >at my technical progress. > >I was less chuffed when I discovered voltmeters like this, and >even less when I found out the Russians did it 30 or so years >before that. > >I've been meaning to make a 7 seg version, you only need 7 >pieces of glass/plastic per digit then. > >Tony If you had enough sheets you could even make a dot matrix display :-) Mike ======================================================================= This e-mail is intended for the person it is addressed to only. The information contained in it may be confidential and/or protected by law. If you are not the intended recipient of this message, you must not make any use of this information, or copy or show it to any person. Please contact us immediately to tell us that you have received this e-mail, and return the original to us. Any use, forwarding, printing or copying of this message is strictly prohibited. No part of this message can be considered a request for goods or services. ======================================================================= -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist