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djlewis
Joined: 10 Mar 2018
Posts: 7
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 Posted: Tue Apr 17, 2018 12:44 pm Post subject: C4004 on IMM 4-42 Board -- sold for $2450 + hi-res photo |
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I know this is the for-sale forum, but because there was so much interest in this item a few weeks back, I am posting this notice of a completed sale.
My IMM 4-42 board with a socketed, zebra-stripe C4004 cpu, all in essentially perfect condition, recently sold privately for $2450.
For the record, the initial contact between seller and buyer as well as all communication between us occurred entirely outside of eBay and were not dependent on eBay or the now-closed eBay listing. Therefore the private sale was consistent with eBay's terms of service.
There were several requests for a hi-res photo of the board to supplement the low-res photos previously available. Here it is -- please forgive any technical deficiencies, as I am not equipped for fancy photography; if there are any problems downloading, let me know:
https://www.dropbox.com/s/g4i07bnqk3wwc47/C4004-whole-board.jpg
Regards. --David Lewis |
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smithy
Joined: 27 Apr 2008
Posts: 2906
Location: Sydney, Australia
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| Posted: Tue Apr 17, 2018 10:22 pm Post subject: |
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That was a very good price - well done.
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My former Intel collection:
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Robev
Joined: 10 Mar 2006
Posts: 3693
Location: New Zealand
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| Posted: Wed Apr 18, 2018 12:34 am Post subject: |
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Nice C4004 in a socket and sold for a very nice price indeed 
Pity that the 4008 & 4009 are soldered on the board though
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The Older they are the Better they are. |
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edwardauskis
Joined: 26 Nov 2014
Posts: 770
Location: Lithuania
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| Posted: Wed Apr 18, 2018 5:44 am Post subject: |
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I do not believe that it was sold at such a price. Just a djlewis wants to show us all that we were wrong to say that his price is too high.
This is only my opinion
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Edvardas |
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cuttingedgecs
Joined: 08 Oct 2017
Posts: 1764
Location: Australia
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| Posted: Wed Apr 18, 2018 6:28 am Post subject: |
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| Thankyou very much for posting this picture. It's a beautiful board, and I'm glad you were willing to share this piece of history with us. |
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wml
Joined: 05 Aug 2017
Posts: 29
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| Posted: Wed Apr 18, 2018 12:27 pm Post subject: |
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| That was a very good price |
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djlewis
Joined: 10 Mar 2018
Posts: 7
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| Posted: Wed Apr 18, 2018 12:28 pm Post subject: |
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| cuttingedgecs wrote: | | Thankyou very much for posting this picture. It's a beautiful board, and I'm glad you were willing to share this piece of history with us. |
Thank *you* -- indeed my pleasure.
And it really is a bit of history. It's a remnant of an actual startup that I co-founded in the early 1970s to make a special-purpose desktop calculator for a particular market, based on the just-released line of microcomputer CPUs from Intel.
To make a long story short, we bought a development system from Intel with this board, to get started while awaiting the faster CPUs they promised -- the 4004 CPU was too slow for serious numerical computation. Those came along fairly soon -- the 8008, 8080, and the MOS Technology 6502 which ultimately powered the product -- so this board got very little actual use.
I was also a CS professor, so I hung onto the board to show students a piece of history, which I did maybe 10 times over the years. Other than that, it stayed in a box, away from light and dust. I recently pulled it out and decided to part with it, lest it become part of my "estate" and get tossed by some heir as a piece of old junk.
As one among many curiosities -- the system software for these early CPUs was pretty primitive, so I wrote an assembler to run on the local university mainframe -- in Snobol -- took me a weekend. We then wrote 8008/8080 assembly code on the mainframe and "downloaded" (before that word existed) the binary to the dev system via a 110 baud (10 characters/sec) teletype hookup. So I may have been the first ever (or close) to use distributed computing with microcomputers! |
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