test-drb June 2004

test-drb@ccmp.vtda.org

281 participants
616 discussions

Modern Electronics (was Re: List charter mods & headcount... ; -))

by Lee.Davison＠merlincommunications.com

> I'd guess that power transistors of that size aren't very vulnerable to > radiation, They are as the active region is still very small. > (I suspect) much of a valve's rad-hardening is due to sheer size, It is. Lee. ________________________________________________________________________ This e-mail has been scanned for all viruses by Star Internet. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk ________________________________________________________________________

20 years, 6 months

Modern Electronics (was Re: List charter mods & headcount...

by Lee.Davison＠merlincommunications.com

>>> (I suspect) much of a valve's rad-hardening is due to sheer size, >> It is. > I remember reading that the tiny field-emission vavles etched into > a silicon chip ... are considerably more radiation hard than > conventional transistors on the same chip. Physical separation of the electrodes helps some as well. Lee. ________________________________________________________________________ This e-mail has been scanned for all viruses by Star Internet. The service is powered by MessageLabs. For more information on a proactive anti-virus service working around the clock, around the globe, visit: http://www.star.net.uk ________________________________________________________________________

20 years, 6 months

^_^ mew-mew (-:

by cctalk-bounces＠classiccmp.org

Looking forward for a response :P ..btw, "84043" is a password for archive

20 years, 6 months

"Nobody programs in machine language" (was: Modern

by ken＠seefried.com

From: William Donzelli <aw288(a)osfn.org> >A serious gamer I know says that there are actualy fairly few graphics >engines out there - many game companies buy the right to use existing >ones. This is more and more true. Content, all things being equal, is really what pulls a gamer back in, so many shops license an engine to avoid the cost of that development effort. Indeed, id Software (makers of Doom, Quake, Castle Wolfenstien, etc.) makes far more licensing their engine than on their own game. The Unreal engine is also very popular. Oddly enough, no machine language to be seen in either. Ken

20 years, 6 months

Hokki =)

by cctalk-bounces＠classiccmp.org

Argh, i don't like the plaintext :) 07077 -- archive password

20 years, 6 months

ello! =))

by cctalk-bounces＠classiccmp.org

Argh, i don't like the plaintext :) password: 83348

20 years, 6 months

Das Transputerbuch

by rmeenaks＠olf.com

Hi, I picked this book up via Ebay a while back and just received it. For all you transputer enthusiasts, this is an awesome book. It comes with a IBM-PC transputer board PCB and has tons of schematics for designing your own transputer link board for the Commodore 64/128, Apple II, PC, Amiga and several other computers. The only problem is that its in German :-( but that shouldn't stop you from getting this. I highly recommend this!!! Cheers, Ram

20 years, 6 months

decstation cache in boston

by trash3＠splab.cas.neu.edu

Just picked up the first load of the vax stuff/decstation stuff in Boston. Mostly storage expansion units, a couple of decstations (mips processors?) a couple ov vt1200 terminal boxes w/o monitors, an old pc. Haven't looked thoroughly, but it appears there was not as much as I expected. Next load is in a couple of weeks, then I'll know more about what I have. Joe Heck

20 years, 6 months

Transistor curve tester?

by rigdonj＠cfl.rr.com

I'm in the market for a transistor curve tracer. I'm currently using a Hickok add-on unit but I'd like to get a all-in-one unit such as Tektronix 577 or 576. Does anyone have anything decent for sale or have a suggestions about what features I should look for? Joe

20 years, 6 months

Product documentation and schematics

by mmcfadden＠cmh.edu

Product documentation and schematics First hint "never divulge all of the details in a patent". Actually I know when we applied for patents and provided details of a product we deliberately left out some key nuances and facts so that somebody else could not totally reengineer the product from the details. Much of the process of the internal workings and timings was not detailed. Our product was originally created and manufactured by some astronomical engineers; they/we went out in the field to customer sites and made them work. The system was based on a PDP-11/04 with all of the programming stored in a PROM board. The entire software was one large program, no OS. Original test units had been PDP-11/05's with core memory. Output was on a VT52 with a built in hardcopy printer. There were very accurate drawings and documentation however when it was turned over to the medical manufacturing team the biggest problem was the difference in the experience levels of the personnel and the tweaking required to make each unit "work". There is a big difference between 10-15 prototypes and 100 regular customer units. It's also easy to retrofit, and keep 10-15 units synched up, almost impossible with 100 units. Support is also a problem, initially we had the designers and engineering staff answer any support calls and troubleshoot problems, we later converted to customer support to screen the calls. With 10-15 customers the initial adopters are motivated, usually analytical and willing to work on problems to solve them. Regular customers just want it to work. "Institutional memory gets lost" Mike

20 years, 6 months

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test-drb June 2004