- vcf-midatlantic - lists.vcfed.org

Sunday museum setup report
by Evan Koblentz 13 Mar '16

13 Mar '16

Adam M. and Anthony (not to be confused with Tony) helped me at the museum today. We finished putting (most of) the microcomputers onto shelves, put (most of) the leftover stuff from the old museum that made its way to the new space back into the warehouse, and purchased (most of) the stuff needed to build our workbench. In summary, we got tons of stuff done without actually getting anything "done". :) Back at it next Sunday.

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examples of non-crystal based clocks in digital computing?
by Ben Greenfield 13 Mar '16

13 Mar '16

Hey All, I have one simple specific question, without a simple answer and general call for examples. I’m researching timing clocks used in general purpose digital computing. I’m starting to think that Ace/Pilot Ace by Alan Turing is the start of clock based general purpose computers. I’m starting to conclude the earlier computers were all basically clocked by the media holding the instructions. Is this correct? I’m currently looking for examples of general purpose computers that do not use crystal based clocks. Any thoughts appreciated. Ben

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Re: [vcf-midatlantic] Opinions needed...
by william degnan 13 Mar '16

13 Mar '16

Wait a few weeks. I have found, believe it or not, you have a better chance to get the same selling price if you wait for the person who wins this auction to save a little money so he can buy yours too. I.e. people who pay top dollar for one rare specialized item will buy more than one if given the chance. Bill Degnan twitter: billdeg vintagecomputer.net On Mar 11, 2016 7:37 PM, "Bill Sudbrink via vcf-midatlantic" < vcf-midatlantic(a)lists.vintagecomputerfederation.org> wrote: > I've never sold anything on ebay in my life. I'd rather > not start now but my little "I'M RICH" comment was not > a joke. I have the same AdLib Gold 1000 card in the > original packaging just like the ebay auction. Actually, > not "just like". Mine is the pre-Windows packaging, only > differing by the absence of the "Microsoft Windows" square > in the corner of the package and fewer diskettes in the > box. I've got the user's guide, warrantee registration > card, everything. So, what to do? Should I put mine up > on ebay now and hope to get some benefit from the attention > on the current auction? Should I wait for this one to end > and hope that the "runner up bidders" will still be > interested? Is my example, not being "Microsoft Windowed", > worth more or less than the one on ebay? > > Thanks, > Bill S. > > > >

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Re: [vcf-midatlantic] examples of non-crystal based clocks in digital computing?
by Duane 13 Mar '16

13 Mar '16

From: Ben Greenfield via vcf-midatlantic Sent: Sunday, March 13, 2016 5:32 AM To: vcf-midatlantic Cc: Ben Greenfield Subject: [vcf-midatlantic] examples of non-crystal based clocks in digital computing? Ben, The UNIVAC 1219B, which VCF has in its collection used a pulse circulating around a delay line to generate the master clock phases. The real time clock interrupts came from a 1024 hertz Tuning Fork Oscillator. No crystals. Duane

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Re: [vcf-midatlantic] examples of non-crystal based clocks in digital computing?
by Evan Koblentz 13 Mar '16

13 Mar '16

>> I’m starting to conclude the earlier computers were all basically clocked by the media holding the instructions. Is this correct? I don’t believe so. ENIAC had a master pulse generator. Brian Stuart (on this list) is making his own ENIAC simulator. Thus he'll have a mich deeper understanding than the rest of us about how the computer really worked.

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Update - tomorrow
by Evan Koblentz 12 Mar '16

12 Mar '16

I'll be at the museum again tomorrow with Amigaphile Anthony B. to continue turning the new room into VCF Mid-Atlantic home.

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museum setup report
by Evan Koblentz 12 Mar '16

12 Mar '16

Tony, his friend Ken, Steve A., and I all worked in the new museum today. Tony and Ken painted the short wall "circuit board green" ... Home Depot says it's "sparkling emerald" or something like that, but I disagree. :) Here's a picture: http://snarc.net/wall.jpg. We removed and painted the outlet faceplates. They need another coat. We'll finish that part next time. On the way home I stopped at Home Depot again and bought black outlets to replace the beige ones. Black outlets will blend in, or least they'll look like something electrical is on the wall. Steve and I spent most of our time setting up shelving and computers in the microcomputer exhibit. Definitely not finished it finally looks like an exhibit vs. being all over the place. Here are some pictures (same side of the aisle from each end): http://snarc.net/aisle1.jpg http://snarc.net/aisle2.jpg Ken moved a set of blinds for us from one window to another, so now four of five windows behind the micro exhibit all match. We will see if InfoAge has any other blinds that also match so we can finish the job. Here's a view from the end of the day, looking into the new double doors from the hallway. Still kind of messy inside, but it's much better than last week.

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OT: Academic Article on Teaching Computers to Children
by Jeffrey Brace 12 Mar '16

12 Mar '16

While searching for academic articles for my Master's in Teaching Class: Typical and Atypical Child Development I thought was interesting because it talks about programming LOGO in the 70's and 80's to children. It goes into some history, then talks about modern walks to teach children programming. http://ase.tufts.edu/devtech/publications/JRTE-robot-hokey-pokey.pdf

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tomorrow?
by Evan Koblentz 12 Mar '16

12 Mar '16

I'd like to go back and do more work on the new museum tomorrow. Having too much fun (and there's too much to do) for me to wait a whole week. Can anyone give me a solid day of work tomorrow? Say, 10-6?

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Opinions needed...
by Bill Sudbrink 11 Mar '16

11 Mar '16

I've never sold anything on ebay in my life. I'd rather not start now but my little "I'M RICH" comment was not a joke. I have the same AdLib Gold 1000 card in the original packaging just like the ebay auction. Actually, not "just like". Mine is the pre-Windows packaging, only differing by the absence of the "Microsoft Windows" square in the corner of the package and fewer diskettes in the box. I've got the user's guide, warrantee registration card, everything. So, what to do? Should I put mine up on ebay now and hope to get some benefit from the attention on the current auction? Should I wait for this one to end and hope that the "runner up bidders" will still be interested? Is my example, not being "Microsoft Windowed", worth more or less than the one on ebay? Thanks, Bill S.

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