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101090 discussions

What is the most amount of money you've spent on a computer or computer-related item?

by sieler＠allegro.com

Interesting question ... brings back good and bad memories :) Probably $5,800 for an HP 3000 Corporate Business System (a 12-processor HP 3000/997). it was a million dollar machine when new. I bought it for $300, paid about $500 for delivery, and $5000 to get the three-phase power installed for it. I reinstalled MPE/iX (the disks had been scrubbed), and discovered that MPE wouldn't boot with more than 10 CPUs active ... due to licensing constraints. All of the HP documentation I could find said that the 3000 version of the hardware was limited to 10 CPUs (the 9000 version, running HP-UX, allowed up to 12). Turns out HP had apparently done an under-the-table sale of a 12-CPU system to someone, and patched (probably one byte of code change) the original copy of the OS to disregard the 10 CPU limit. (Under the table sales, and support, wasn't unusual with HP near the end of the HP 3000's lifetime.) The machine was in a spare room at our office in Cupertino. When we had to move, I donated it to Paul Allen's Living Computers Museum, in Seattle. Stan

8 years, 3 months

Microscope for Soldering and Inspection Work

by robert.jarratt＠ntlworld.com

Has anyone had experience of using an item like this for soldering and PCB inspection work? https://www.amazon.co.uk/AmScope-Widefield-Binocular-Inspection-Microscope/d p/B005C75IVM/ref=sr_1_fkmr0_1?ie=UTF8 <https://www.amazon.co.uk/AmScope-Widefield-Binocular-Inspection-Microscope/ dp/B005C75IVM/ref=sr_1_fkmr0_1?ie=UTF8&qid=1484294314&sr=8-1-fkmr0&keywords= AmScope+sm-3bx> &qid=1484294314&sr=8-1-fkmr0&keywords=AmScope+sm-3bx At the moment I have one of these: http://www.maplin.co.uk/p/22w-fluorescent-magnifying-craft-lamp-a29ff which I find OK, but sometimes it gets in the way of the soldering iron and it isn't that easy to move it to a position and have it actually stay there. Regards Rob

8 years, 3 months

What is the most prized possession in your collection?

by COURYHOUSE＠aol.com

Alan! Neat! I like this arm you have! I also have an articulating monster B & L arm and it is amazing.... but it takes up space on the desk with a monster base. Ed# In a message dated 1/14/2017 10:58:57 A.M. US Mountain Standard Time, alan at alanlee.org writes: I have high 5 figures invested into a home soldering lab. I use a digital video scope now, however for 5-6 years before that, I used this scope nearly every day for mostly 0402/.5 mm pitch soldering and repair: http://www.amscope.com/3-5x-90x-simul-focal-articulating-zoom-stereo-microsc ope-with-3mp-digital-camera.html?gclid=CI6Dxb_D4sECFc1Z7AodUx8AiQ [1] Along with these eye pieces: http://www.amscope.com/pair-of-super-widefield-20x-microscope-eyepieces-30mm .html?gclid=CNr-3bXD4sECFQ0Q7AodzjsAeQ [2] The combination with swing arm allows me to move the scope anywhere on my work bench and gives a use-able work height of up to 18 inches underneath. I highly recommend it. -Alan P.S. Disregard the camera. I thought it would be useful when I bought it, but never once used it. On 2017-01-13 06:02, Alexandre Souza wrote: > We've talked about the most expensive, the most rare, the less usual... > > Now lets talk about what you love most <3 > > For me is the Apple IIe signed by Woz :D > > What is your most prized and loved possession? :) Links: ------ [1] http://www.amscope.com/3-5x-90x-simul-focal-articulating-zoom-stereo-microsc ope-with-3mp-digital-camera.html?gclid=CI6Dxb_D4sECFc1Z7AodUx8AiQ [2] http://www.amscope.com/pair-of-super-widefield-20x-microscope-eyepieces-30mm .html?gclid=CNr-3bXD4sECFQ0Q7AodzjsAeQ

8 years, 3 months

What is the most prized possession in your collection?

by vintagecomputer＠bettercomputing.net

That's a hard one. ?I feel like the answer should be 'my Mark-8 boards!', because they are so rare. ?But they're just boards.. they don't do anything. ?I find the computer I keep coming back to is my Digital Group z80. ?Digital Group just has that personality factor. ?

8 years, 3 months

Microscope for Soldering and Inspection Work

by COURYHOUSE＠aol.com

Be sure your stereo-zoom has a cover thing screwed into the front of it. always good to protect the active optics. We have a rework station with a sliding X Y table on it.... and a scope mounted on it... but... my hands are not steady as when young..( need to find technology to assist with that!) Ed# _www.smecc.org_ (http://www.smecc.org) In a message dated 1/14/2017 9:20:05 A.M. US Mountain Standard Time, cclist at sydex.com writes: On 01/14/2017 12:48 AM, Rob Jarratt wrote: > Has anyone had experience of using an item like this for soldering > and PCB inspection work? I use a B&L stereo zoom microscope for inspection, but have never used it for soldering. That is, after soldering in, say, a TQFP, I'll use it to examine for misregistration and solder bridges. But I can't imagine soldering under it. For that, where normal vision doesn't suffice, I use a head-mounted binocular loupe. Seems to work just fine. --Chuck

8 years, 3 months

Anyone have one of these? QDP-300

by jwsmail＠jwsss.com

This looks like a very nice system. I'm not sure I ever heard of it, but today's Sharktank (computerworld) has a fun story about it. Even better extra points if you have the said system in your collection. System (from link in article): http://blog.modernmechanix.com/qdp-300-the-peace-of-mind-computer/ Quasar Data Products http://www.old-computers.com/museum/computer.asp?st=1&c=616 Shark Tank Column, 1/13/2017 (yes Friday the 13th). For future reference if the link fails. http://www.computerworld.com/article/3157097/it-industry/it-its-not-just-a-… The QDP had a hard drive and 8" floppies. Z80 x 64K memory. Thanks Jim

8 years, 3 months

What is the most prized possession in your collection?

by COURYHOUSE＠aol.com

Mine is the HP-2000 ... it was a game changer for me in the used computer business as it gave me a one company direction... from dealing in parts to keep it alive to having HP-3000 systems being an indy new HP dealer on PC products in the 80s into the 90s. On a more personal level, the Classic PDP-8 with the plexi top covers we have here in the SMECC museum project I have given them. I wanted one ion 1965 and finally got one in the 80s! Ed# _www.smecc.org_ (http://www.smecc.org) In a message dated 1/13/2017 4:03:03 A.M. US Mountain Standard Time, alexandre.tabajara at gmail.com writes: We've talked about the most expensive, the most rare, the less usual... Now lets talk about what you love most <3 For me is the Apple IIe signed by Woz :D What is your most prized and loved possession? :)

8 years, 3 months

What's the rarest or most unusual software item do you own?

by jnc＠mercury.lcs.mit.edu

> From: Lars Brinkhoff > Is there a list? What's on it? I think he meant the mailing list. > I guess the PDP-11 operating system TRANTOR ... I recently found a copy > and sent it to the original authors. Oh, wow, neat. Where did you find it, if I may ask - I'm curious! Did a copy go to bitsavers, too (I hope)? Noel

8 years, 3 months

Looking for Dr. Dobb's Developer Library DVD 6

by classiccmp＠crash.com

Greetings all, I always figured I'd order one of the compilations of Dr. Dobb's Journal on CD/DVD One Of These Days... Then they went and stopped publication. While a lot of DDJ content is still online at drdobbs.com, I'd still like to pick up that DVD. So like the Subject says, I'm looking to acquire a copy of this last version of said compilation. Thanks, --Steve.

8 years, 3 months

What's the rarest or most unusual software item do you own?

by jnc＠mercury.lcs.mit.edu

> From: Leif Johansson > Me and peter recently discovered he saved the rest of the box. Is that the one I saw in the 'MIT-MC in Sweden' pictures a while back? > Paul Koning > A listing of RSTS-11 V0 If that's not already online in machine-readable form, we should get it scanned and OCR'd. I have a _very_ soft spot for RSTS-11 - I learned to program on a PDP-11/20 running RSTS-11. (Actually, I learned to program from reading a BASIC-PLUS language manual, borrowed from Matthew Weinstein, over my first weekend at boarding school!) Being able to run on it an actual PDP-11 (using Guy's MEM-11 card) would be so far beyond super-cool that it would be below absolute zero... Noel

8 years, 3 months

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