Dave Fischer<p>A memory board from the space shuttle computer, which was a stripped-down clone of an IBM 360 mainframe. The systems originally used core memory since that was resistant to cosmic rays. This is one of the solid state ram boards from the 1990 upgrade that finally replaced the core memory. There seem to be 656 kilobytes here, presumably a 512k board with a LOT of error correction?</p><p><a href="https://hachyderm.io/tags/RetroComputing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RetroComputing</span></a> <a href="https://hachyderm.io/tags/RCSRI" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RCSRI</span></a> <a href="https://hachyderm.io/tags/NASA" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>NASA</span></a></p>
Recherches récentes
Aucune recherche récente
Options de recherche
Disponible uniquement lorsque vous êtes connecté.
mastouille.fr est l'un des nombreux serveurs Mastodon indépendants que vous pouvez utiliser pour participer au fédiverse.
Mastouille est une instance Mastodon durable, ouverte, et hébergée en France.
Administré par :
Statistiques du serveur :
632comptes actifs
mastouille.fr: À propos · Annuaire des profils · Politique de confidentialité
Mastodon: À propos · Télécharger l’application · Raccourcis clavier · Voir le code source · v4.3.4
#rcsri
0 message · 0 participant · 0 message aujourd’hui
Dave Fischer<p>Just spent three days reorganizing the museum. The DECsystem10 is much more accessible, and (almost) all in one spot. A few other key items are also in much better locations than previously. <a href="https://hachyderm.io/tags/RCSRI" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RCSRI</span></a> <a href="https://hachyderm.io/tags/RetroComputing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RetroComputing</span></a> <a href="https://hachyderm.io/tags/DEC" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DEC</span></a></p>
Dave Fischer<p>We got the <a href="https://hachyderm.io/tags/PDP12" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>PDP12</span></a> working again! <a href="https://hachyderm.io/tags/RetroComputing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RetroComputing</span></a> <a href="https://hachyderm.io/tags/RCSRI" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RCSRI</span></a></p>
Dave Fischer<p><span class="h-card" translate="no"><a href="https://mastodon.social/@AbandonedAmerica" class="u-url mention" rel="nofollow noopener noreferrer" target="_blank">@<span>AbandonedAmerica</span></a></span> We have some similar cards from a Jacquard loom in our museum collection. <a href="https://hachyderm.io/tags/RCSRI" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RCSRI</span></a></p>
Dave Fischer<p>Photographing some old printing tech. A typeball from an IBM Selectric typewriter/printer/terminal. Xerox font for a daisy wheel printer. Drum from a drum printer. <a href="https://hachyderm.io/tags/Photography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Photography</span></a> <a href="https://hachyderm.io/tags/RetroComputing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RetroComputing</span></a> <a href="https://hachyderm.io/tags/RCSRI" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RCSRI</span></a></p>
Dave Fischer<p>MIPS R12000, late 90s. <a href="https://hachyderm.io/tags/RetroComputing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RetroComputing</span></a> <a href="https://hachyderm.io/tags/Photography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Photography</span></a> <a href="https://hachyderm.io/tags/RCSRI" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RCSRI</span></a></p>
Dave Fischer<p>That seems like the proper number of Octanes. <a href="https://hachyderm.io/tags/RetroComputing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RetroComputing</span></a> <a href="https://hachyderm.io/tags/SGI" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SGI</span></a> <a href="https://hachyderm.io/tags/RCSRI" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RCSRI</span></a></p>
Dave Fischer<p>The core of the CPU of the VAX-11/730 minicomputer, 1982. Eight AMD AM2901BDC bitslice processors, operating on four bits each, work together to process thirty-two bit values.</p><p><a href="https://hachyderm.io/tags/RetroComputing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RetroComputing</span></a> <a href="https://hachyderm.io/tags/VAX" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>VAX</span></a> <a href="https://hachyderm.io/tags/Photography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Photography</span></a> <a href="https://hachyderm.io/tags/RCSRI" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RCSRI</span></a></p>
Dave Fischer<p><a href="https://hachyderm.io/tags/Photography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Photography</span></a> <a href="https://hachyderm.io/tags/Next" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Next</span></a> <a href="https://hachyderm.io/tags/RCSRI" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RCSRI</span></a></p>
Dave Fischer<p>Working on getting the museum's microfiche sorted out. The most interesting stuff to me is the stuff for field service. "Tech Tips" and field change orders. <a href="https://hachyderm.io/tags/DEC" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>DEC</span></a> <a href="https://hachyderm.io/tags/VMS" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>VMS</span></a> <a href="https://hachyderm.io/tags/RetroComputing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RetroComputing</span></a> <a href="https://hachyderm.io/tags/RCSRI" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RCSRI</span></a></p>
Dave Fischer<p>Early Sun multibus ethernet board. Sun-2, later sun-2 & sun-3 with VME adapter. (Still works! I had this running in a 3/280 a few years ago.)</p><p>Higher resolution: </p><p><a href="http://www.cca.org/d/sun-multibus-eth.jpg" rel="nofollow noopener noreferrer" translate="no" target="_blank"><span class="invisible">http://www.</span><span class="">cca.org/d/sun-multibus-eth.jpg</span><span class="invisible"></span></a></p><p><a href="https://hachyderm.io/tags/Suntember" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>Suntember</span></a> <a href="https://hachyderm.io/tags/SunMicrosystems" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>SunMicrosystems</span></a> <a href="https://hachyderm.io/tags/RetroComputing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RetroComputing</span></a> <a href="https://hachyderm.io/tags/RCSRI" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>RCSRI</span></a></p>
Dave Fischer<p>LARGE board, Intergraph, late 80s. This was in a VAX 8550 which had these weird Intergraph disk subsystems which apparently could do searches on features within CAD files without involving the VAX CPU. (Odd: note the wirewrap settings just below the center large chip. Pretty late for that.) <a href="https://hachyderm.io/tags/rcsri" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>rcsri</span></a> <a href="https://hachyderm.io/tags/retrocomputing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>retrocomputing</span></a></p>
Dave Fischer<p>The Packard Bell "High Speed Buffer" is a device from 1961 that allows data transfer between devices of different speeds. (In this case, a PB-250 minicomputer and various A/D, D/A, etc.)</p><p>It's a 3U 19" rack box that weighs 25 pounds.</p><p>It stores 22 bits.</p><p>TWENTY. TWO.</p><p>Almost 3 bytes. (But not quite.)</p><p>Those SR-100 shift register boards down the center store 2 bits apiece.</p><p>More info on the buffer & the system it was part of here: </p><p><a href="https://rcsri.org/collection/pb-250/" rel="nofollow noopener noreferrer" target="_blank"><span class="invisible">https://</span><span class="">rcsri.org/collection/pb-250/</span><span class="invisible"></span></a></p><p><a href="https://hachyderm.io/tags/retrocomputing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>retrocomputing</span></a> <a href="https://hachyderm.io/tags/rcsri" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>rcsri</span></a></p>
Dave Fischer<p>Updating our computer museum web site. Here's our Teletype with an external answerback unit (a 20-byte electromechanical rom) and a Bell 101 (the first modem ever commercially available):</p><p><a href="https://hachyderm.io/tags/rcsri" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>rcsri</span></a> <a href="https://hachyderm.io/tags/retrocomputing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>retrocomputing</span></a></p><p><a href="https://rcsri.org/collection/asr-33-bell-101/" rel="nofollow noopener noreferrer" target="_blank"><span class="invisible">https://</span><span class="ellipsis">rcsri.org/collection/asr-33-be</span><span class="invisible">ll-101/</span></a></p>
Dave Fischer<p>This is the best photo of magnetic core memory I've ever taken. IBM, early 60s. Shot with a microscope lens mounted on a 35mm B&W digital camera. No post! (I got into the habit of never doing any post-processing while documenting historic artifacts for the museum. Photoshop not allowed!) <a href="https://hachyderm.io/tags/retrocomputing" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>retrocomputing</span></a> <a href="https://hachyderm.io/tags/photography" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>photography</span></a> <a href="https://hachyderm.io/tags/rcsri" class="mention hashtag" rel="nofollow noopener noreferrer" target="_blank">#<span>rcsri</span></a></p><p>I used this shot for the cover of my book of images from our museum:</p><p><a href="https://www.amazon.com/Inside-Machines-Dave-Fischer/dp/B09X557N52" rel="nofollow noopener noreferrer" target="_blank"><span class="invisible">https://www.</span><span class="ellipsis">amazon.com/Inside-Machines-Dav</span><span class="invisible">e-Fischer/dp/B09X557N52</span></a></p>
ExplorerFlux en direct
Mastodon est le meilleur moyen de suivre ce qui se passe.
Suivez n'importe qui à travers le fédivers et affichez tout dans un ordre chronologique. Ni algorithmes, ni publicités, ni appâts à clics en perspective.
Créer un compteSe connecterGlissez et déposez pour envoyer