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Hello:</div>
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<br>
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You might check out my book <i>Reckoners</i>, which has an extensive discussion of Zuse's work. It is long out of print but may be available on-line:</div>
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<a href="http://onlinebooks.library.upenn.edu/webbin/book/lookupid?key=olbp36015" id="LPlnk194337">http://onlinebooks.library.upenn.edu/webbin/book/lookupid?key=olbp36015</a><br>
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<br>
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On a related note: I saw the recent obituary of Ed Fredkin, the MIT computer scientist who did pioneering work on time sharing and AI. He was an advocate of the notion that the universe is essentially an information processing machine. Zuse anticipated that
with a book he wrote in 1969: "Rechender Raum" ("Calculating Space). <a href="https://en.wikipedia.org/wiki/Calculating_Space" id="LPlnkOWALinkPreview">https://en.wikipedia.org/wiki/Calculating_Space</a>.</div>
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Best,</div>
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<br>
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<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);" class="elementToProof ContentPasted0 ContentPasted1">
Paul Ceruzzi<br>
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<a target="_blank" id="LPUrlAnchor584047" href="https://en.wikipedia.org/wiki/Calculating_Space" style="text-decoration: none;">Calculating Space - Wikipedia</a></div>
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en.wikipedia.org</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Members <members-bounces@lists.sigcis.org> on behalf of Erica Robles via Members <members@lists.sigcis.org><br>
<b>Sent:</b> Monday, July 10, 2023 1:12 PM<br>
<b>To:</b> members@lists.sigcis.org <members@lists.sigcis.org><br>
<b>Cc:</b> Scott Ferguson <sferguson@usf.edu><br>
<b>Subject:</b> Re: [SIGCIS-Members] Zuse / binary</font>
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<p class="x_MsoNormal" style="line-height:12.0pt; background:#FFEB9C"><b><span style="font-size:9.0pt; font-family:"Calibri",sans-serif; color:#9C6500">External Email - Exercise Caution</span></b></p>
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<p class="x_MsoNormal"><span style="font-family:"Calibri Light",sans-serif">Dear Colleagues,</span></p>
<p class="x_MsoNormal"><span style="font-family:"Calibri Light",sans-serif"> </span></p>
<p class="x_MsoNormal"><span style="font-family:"Calibri Light",sans-serif">This thread on Zuse is fantastic and I wanted to signal interest from myself and my collaborator, Scott Ferguson, on this topic. We’re media scholars and there are a few tendrils on
Zuse and this question of math and the medium that surface from time to time (see Lev Manovitch on
<a href="http://manovich.net/content/04-projects/026-new-media-a-user-s-guide/23_article_1999.pdf" originalsrc="http://manovich.net/content/04-projects/026-new-media-a-user-s-guide/23_article_1999.pdf" shash="Do3d7wMqfh4m7oN48f37JVIUuYTVUlo9PhdZJHemjwBUugdnZ/aPwJnEV8Z319kTmPCPUJOW7zKJktr0ywQDYbnh6Nag2GIZfk++0UxU/ZewBHn+CG6eXcwWGCAirYYi+VE3o2XK9+BgKypqgXU21bGyj3Af/2u4VhPczc4/pcY=">
New Media: A User’s Guide</a>). We’re particularly interested in Zuse as a figure that brings computing and film history into conversation. He used discarded 35mm film scrounged from trash cans outside studios as punched tape, and we understand that his machines
used floating point representations rather than fixed-point numbers in calculation. We would love to be in correspondence/conversation with Zuse scholars and enthusiasts. We’d also be curious if there are recommended articles or resources that place Zuse in
a genealogy of floating point computing to the present. </span></p>
<p class="x_MsoNormal"><span style="font-family:"Calibri Light",sans-serif"> </span></p>
<p class="x_MsoNormal"><span style="font-family:"Calibri Light",sans-serif">Many thanks for opening this topic.
</span></p>
<p class="x_MsoNormal"><span style="font-family:"Calibri Light",sans-serif"> </span></p>
<p class="x_MsoNormal"><span style="font-family:"Calibri Light",sans-serif">Erica & Scott</span></p>
<p class="x_MsoNormal"><span style="font-family:"Calibri Light",sans-serif"> </span></p>
<p class="x_MsoNormal"><span style="font-family:"Calibri Light",sans-serif"> </span></p>
<p class="x_MsoNormal"><span style="color:black">Erica Robles-Anderson</span><span style="font-family:"Calibri Light",sans-serif"></span></p>
<div>
<p class="x_MsoNormal"><span style="color:black">Associate Professor</span></p>
<p class="x_MsoNormal"><span style="color:black">Media, Culture, and Communication</span></p>
<p class="x_MsoNormal"><span style="color:black">New York University</span></p>
<p class="x_MsoNormal"><span style="color:black"><a href="mailto:erica.robles@nyu.edu"><span style="color:#0563C1">erica.robles@nyu.edu</span></a></span></p>
<p class="x_MsoNormal"><span style="color:black"> </span></p>
<p class="x_MsoNormal"> </p>
<p class="x_MsoNormal">Editor-in-Chief, <i><a href="https://read.dukeupress.edu/public-culture" originalsrc="https://read.dukeupress.edu/public-culture" shash="cCeLjUeUZrDC57Y5MgknP2TTQXgjDvTIOdBDHRw0H2DmNpPhnwZI6IgEZVim0YUMfDzYp+ce7TmX0pGMhzJmGiRlXb/qsRfQqrTQTPD2133Q8JW9lyous43iHut6DmpXz3VbvlUB99RcbTbupV6G6qCJObJVKEWZY/jfvV+jgG0="><span style="color:#0563C1">Public
Culture</span></a></i></p>
</div>
<p class="x_MsoNormal">erica@publicculture.org<span style="font-family:"Calibri Light",sans-serif"></span></p>
<p class="x_MsoNormal"><span style="font-family:"Calibri Light",sans-serif"> </span></p>
<p class="x_MsoNormal"><span style="font-family:"Calibri Light",sans-serif"> </span></p>
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<p class="x_MsoNormal">Hi Johannah - As far as I know the letter hasn't been published, though there are references to it in the literature. There's a typed copy in Herman Goldstine's papers at the APS. Goldstine sent von Neumann's original manuscript (of the
First Draft) back to Valentine Bargmann at Princeton, as JvN was in Los Alamos at the time. I contacted Princeton last year to see if there was any sign of it in Bargmann's papers. The archivist I was talking to said no, but did turn up the autograph of the
May 8 letter instead, which was a nice consolation prize!</p>
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<p class="x_MsoNormal">All the best</p>
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<p class="x_MsoNormal">Mark</p>
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<p class="x_MsoNormal">On Sun, 9 Jul 2023 at 14:45, Johannah Rodgers <<a href="mailto:johannah.rodgers@gmail.com" target="_blank">johannah.rodgers@gmail.com</a>> wrote:</p>
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<p class="x_MsoNormal">Thank you, Mark! Not having been aware of this von Neumann letter, my reading of the "First Draft" and of the "EDVAC Progress Report" with regard to the decision to use binary notation would indicate that the technical affordances of
various components far outweighed consideration of human usability and legibility. Now that I know about this von Neumann letter--is this in the APA archive or published somewhere?--I will look forward to integrating that into the mix. </p>
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<p class="x_MsoNormal">All best, </p>
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<p class="x_MsoNormal">Johannah</p>
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<p class="x_MsoNormal">On Sun, Jul 9, 2023 at 9:26 AM Mark Priestley via Members <<a href="mailto:members@lists.sigcis.org" target="_blank">members@lists.sigcis.org</a>> wrote:</p>
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<p class="x_MsoNormal">Hi all </p>
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<p class="x_MsoNormal">It's worth remembering that von Neumann mailed the text of the
<i>First Draft</i> to Herman Goldstine at the end of April 1945, around two months before the June 30 date that we are familiar with from the mimeographed version. On May 8 he followed up with a long letter which included additional material to be added to
the report (it never was). A lot of this material concerns input and output: von Neumann was concerned that long binary strings are unfamiliar to operators, and proposed a binary-coded decimal scheme for input. Instructions were to be punched on a special-purpose
keyboard with dedicated symbols corresponding to those in EDVAC's order code.</p>
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<p class="x_MsoNormal">Of course, binary-coded input would require translation into binary, so there are trade-offs involved, the effects of which may not have been obvious a priori. Presumably Eckert and Mauchly are just exploring these trade-offs by considering
a binary-coded machine in detail - had anyone done this before? They don't seem to have be committed to one or the other ("a binary system may ultimately be used"). But importantly, they are concerned with the overall economy of using the machine, not just
with the narrower question of whether binary is in some sense "simpler". So on p71, for example, they write "the ease with which a problem may be arranged for computation and the desired instructions placed on magnetic wire or tape is a very important factor
in the design of the EDVAC". They go on to say that it's important that all the symbols used should appear on a standard typewriter - presumably a direct riposte to von Neumann's proposal!</p>
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<p class="x_MsoNormal">Best wishes</p>
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<p class="x_MsoNormal">Mark</p>
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<p class="x_MsoNormal"><br clear="all">
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<p class="x_MsoNormal">Dr Mark Priestley</p>
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<p class="x_MsoNormal"><a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__www.markpriestley.net&d=DwMFaQ&c=slrrB7dE8n7gBJbeO0g-IQ&r=RUeelG4uwkrJzofr1d14AdPCR6EBVpmP8ugf35tpfYU&m=z5wpLcEIEuHG9vghc0A0XR8330FqzRzrXXhBqF40dlvCrDHI0DpE1xu7dZeS2NTr&s=Qkyt3aohzYdfkqfkGZzsS2z37Rdml3LxFY54587qD90&e=" originalsrc="https://urldefense.proofpoint.com/v2/url?u=http-3A__www.markpriestley.net&d=DwMFaQ&c=slrrB7dE8n7gBJbeO0g-IQ&r=RUeelG4uwkrJzofr1d14AdPCR6EBVpmP8ugf35tpfYU&m=z5wpLcEIEuHG9vghc0A0XR8330FqzRzrXXhBqF40dlvCrDHI0DpE1xu7dZeS2NTr&s=Qkyt3aohzYdfkqfkGZzsS2z37Rdml3LxFY54587qD90&e=" shash="PF8c3WekBk+WIJjG4nqnY8Pr/R2FACRxtWzHPOEpu6t9v1KhRFa3oAGZTa0TiuhAX1HxfKki0XVGuQFu0ZEXFLDSkNq2bNeg/98MPIcSk790tA+SCnOfVFTlbz/ukf8QOD0Rv30c7APoSoSdRiNJGMLEkIknGsTn/rmHfqehQ6g=" target="_blank">www.markpriestley.net</a>
</p>
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<p class="x_MsoNormal"> </p>
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<div>
<p class="x_MsoNormal">Senior Research Fellow</p>
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<p class="x_MsoNormal">The National Museum of Computing</p>
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<p class="x_MsoNormal">Bletchley Park, UK<br>
<a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__www.tnmoc.org_&d=DwMFaQ&c=slrrB7dE8n7gBJbeO0g-IQ&r=RUeelG4uwkrJzofr1d14AdPCR6EBVpmP8ugf35tpfYU&m=z5wpLcEIEuHG9vghc0A0XR8330FqzRzrXXhBqF40dlvCrDHI0DpE1xu7dZeS2NTr&s=-BRPbI_xaFCYeVzF8HrdJQqk6SXJPcmam3xRucVnaKg&e=" originalsrc="https://urldefense.proofpoint.com/v2/url?u=https-3A__www.tnmoc.org_&d=DwMFaQ&c=slrrB7dE8n7gBJbeO0g-IQ&r=RUeelG4uwkrJzofr1d14AdPCR6EBVpmP8ugf35tpfYU&m=z5wpLcEIEuHG9vghc0A0XR8330FqzRzrXXhBqF40dlvCrDHI0DpE1xu7dZeS2NTr&s=-BRPbI_xaFCYeVzF8HrdJQqk6SXJPcmam3xRucVnaKg&e=" shash="BymQUuFvGmSvwhmWfidTLQJ2rW/p69xNtYd3vnAwNKcL94ai1e8GHMNumaR5MKB0VlOMPz2w2/J6eM/A8MJcJzFEuTnH2c6q/tKfW9Rxef1jyWNW21FwGWL2Bn1X5w6OOYvOA8uW6ehStHW2KIgEy+kHeJ0dmwl4QiUwrPIV24c=" target="_blank">https://www.tnmoc.org</a></p>
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<p class="x_MsoNormal">On Sun, 9 Jul 2023 at 05:19, Brian E Carpenter via Members <<a href="mailto:members@lists.sigcis.org" target="_blank">members@lists.sigcis.org</a>> wrote:</p>
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<p class="x_MsoNormal">On 09-Jul-23 05:23, Johannah Rodgers via Members wrote:<br>
> Thanks everyone for this fascinating discussion. While I cannot offer any contribution to Zuse's decision to use binary notation, I do have an opinion to offer re: the decision to use binary rather than decimal notation with the EDVAC. In their 1945 report
entitled "Automatic High Speed Computing: A Progress Report on the EDVAC," Eckert and Mauchly write that "accuracy is ensured by digital methods" (6) but, there is also an indication that the reliability of vacuum tubes is greatly increased by the use of "digital
methods."<br>
<br>
Thanks for reminding me of that report. On the binary v. decimal point, it is interesting to contrast it with the von Neumann report. The progress report says:<br>
<br>
"In the EDVAC, the various digits specifying a number will be transmitted<br>
serially through a single channel. Switching equipment is consequently<br>
simplified and reduced. Moreover, the storage or memory elements to be<br>
used in the EDVAC are entirely different from those used in the ENIAC."<br>
[page 4]<br>
<br>
"Indeed, the EDVAC will store its operating instruc-<br>
tions in exactly the same manner as it stores numbers." [page 5]<br>
<br>
"For the purpose of this report, it was decided to present plans based on<br>
use of a coded decimal number representation, although a binary system may<br>
ultimately be used. The computer elements are therefore somewhat more com-<br>
plicated than they would be for a binary machine." [page 8]<br>
<br>
That was dated almost exactly 3 months later than the von Neumann report, which clearly states that the machine should be binary. An interesting discrepancy. I wonder whether the progress report was aimed at a somewhat conservative management chain? Or is this
simply a reflection of von Neumann's status as a brilliant outsider?<br>
<br>
Regards,<br>
Brian Carpenter<br>
<br>
> <br>
> All best,<br>
> <br>
> Johannah<br>
> <br>
> On Sat, Jul 8, 2023 at 12:43 PM Ceruzzi, Paul via Members <<a href="mailto:members@lists.sigcis.org" target="_blank">members@lists.sigcis.org</a> <mailto:<a href="mailto:members@lists.sigcis.org" target="_blank">members@lists.sigcis.org</a>>> wrote:<br>
> <br>
> Fascinating discussion. Zuse told me that he was taught binary arithmetic in grade school, but he only learned of Leibniz's essay on binary (ca. 1680) after Zuse began work on computers. Babbage was an admirer of Leibniz's work but did not consider binary
for his engines. The Z1, which had a binary calculating unit, did not work well, and therefore Zuse adopted electromagnetic relays (a technology not available to Babbage) for his later machines, which did work. Attempts to reconstruct the Z1 for the Deutsches
Technikmuseum using late 20th-Century machine tools also failed -- please correct me if I am mistaken. But note that Zuse built a successful mecahnical binary /memory/ unit for the Z4, which not only worked well but which was in steady service at the ETH
in Switzerland for years. The joke was that the clicking of the Z4 relays was the loudest noise in Zurich on any given evening. The Z4 is now at the Deutsches Museum in Munich.<br>
> <br>
> Paul Ceruzzi<br>
> ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------<br>
> *From:* Members <<a href="mailto:members-bounces@lists.sigcis.org" target="_blank">members-bounces@lists.sigcis.org</a> <mailto:<a href="mailto:members-bounces@lists.sigcis.org" target="_blank">members-bounces@lists.sigcis.org</a>>> on behalf of Jesper
Juul via Members <<a href="mailto:members@lists.sigcis.org" target="_blank">members@lists.sigcis.org</a> <mailto:<a href="mailto:members@lists.sigcis.org" target="_blank">members@lists.sigcis.org</a>>><br>
> *Sent:* Saturday, July 8, 2023 8:05 AM<br>
> *To:* Evan Koblentz <<a href="mailto:evank@njit.edu" target="_blank">evank@njit.edu</a> <mailto:<a href="mailto:evank@njit.edu" target="_blank">evank@njit.edu</a>>><br>
> *Cc:* <a href="mailto:members@lists.sigcis.org" target="_blank">members@lists.sigcis.org</a> <mailto:<a href="mailto:members@lists.sigcis.org" target="_blank">members@lists.sigcis.org</a>> <<a href="mailto:members@lists.sigcis.org" target="_blank">members@lists.sigcis.org</a>
<mailto:<a href="mailto:members@lists.sigcis.org" target="_blank">members@lists.sigcis.org</a>>><br>
> *Subject:* Re: [SIGCIS-Members] Zuse / binary<br>
> <br>
> *External Email - Exercise Caution*<br>
> <br>
> In Raúl Rojas' paper on the Z1/Z3(1), he writes that "instead of using gears (as Babbage had done in the previous century), Zuse implemented logical and arithmetical operations using sliding metallic rods. The rods could move in only one of two directions
(forward or backward) and therefore were appropriate for a binary machine." The Z1 is 1936-38.<br>
> <br>
> This doesn't quite explain if rods or binary arithmetic came first, but there is a footnote to Zuse's book "Der Computer mein Lebenswerk".<br>
> <br>
> As a side note, I can recommend seeing the Z1 in the Technical Museum in Berlin if you are near.<br>
> <br>
> Jesper Juul<br>
> <br>
> 1) <a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__ed-2Dthelen.org_comp-2Dhist_Zuse-5FZ1-5Fand-5FZ3.pdf&d=DwMFaQ&c=slrrB7dE8n7gBJbeO0g-IQ&r=RUeelG4uwkrJzofr1d14AdPCR6EBVpmP8ugf35tpfYU&m=z5wpLcEIEuHG9vghc0A0XR8330FqzRzrXXhBqF40dlvCrDHI0DpE1xu7dZeS2NTr&s=XEMvUkvXYD-bIindGJVVG6k1j9mdLdX-AXBLNVhkoX0&e=" originalsrc="https://urldefense.proofpoint.com/v2/url?u=https-3A__ed-2Dthelen.org_comp-2Dhist_Zuse-5FZ1-5Fand-5FZ3.pdf&d=DwMFaQ&c=slrrB7dE8n7gBJbeO0g-IQ&r=RUeelG4uwkrJzofr1d14AdPCR6EBVpmP8ugf35tpfYU&m=z5wpLcEIEuHG9vghc0A0XR8330FqzRzrXXhBqF40dlvCrDHI0DpE1xu7dZeS2NTr&s=XEMvUkvXYD-bIindGJVVG6k1j9mdLdX-AXBLNVhkoX0&e=" shash="znxG3V4597zi6lFyxK/tWmIwymkbCLaNIGKObKBxzR08aH4WIAOZYeHw2m6x2/9qXlcI2tKHyV8lD7+dA/olk+9R+e8FJ91+UYClBf8jJ6XljLro6ggbaOC9aDHyD0ERFQzoo0oRGh3NXZDNoAGI2KeN/CtHcB7MWxuC3sUHXW0=" target="_blank">
https://ed-thelen.org/comp-hist/Zuse_Z1_and_Z3.pdf</a> <<a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__ed-2Dthelen.org_comp-2Dhist_Zuse-5FZ1-5Fand-5FZ3.pdf&d=DwMFaQ&c=slrrB7dE8n7gBJbeO0g-IQ&r=RUeelG4uwkrJzofr1d14AdPCR6EBVpmP8ugf35tpfYU&m=z5wpLcEIEuHG9vghc0A0XR8330FqzRzrXXhBqF40dlvCrDHI0DpE1xu7dZeS2NTr&s=XEMvUkvXYD-bIindGJVVG6k1j9mdLdX-AXBLNVhkoX0&e=" originalsrc="https://urldefense.proofpoint.com/v2/url?u=https-3A__ed-2Dthelen.org_comp-2Dhist_Zuse-5FZ1-5Fand-5FZ3.pdf&d=DwMFaQ&c=slrrB7dE8n7gBJbeO0g-IQ&r=RUeelG4uwkrJzofr1d14AdPCR6EBVpmP8ugf35tpfYU&m=z5wpLcEIEuHG9vghc0A0XR8330FqzRzrXXhBqF40dlvCrDHI0DpE1xu7dZeS2NTr&s=XEMvUkvXYD-bIindGJVVG6k1j9mdLdX-AXBLNVhkoX0&e=" shash="znxG3V4597zi6lFyxK/tWmIwymkbCLaNIGKObKBxzR08aH4WIAOZYeHw2m6x2/9qXlcI2tKHyV8lD7+dA/olk+9R+e8FJ91+UYClBf8jJ6XljLro6ggbaOC9aDHyD0ERFQzoo0oRGh3NXZDNoAGI2KeN/CtHcB7MWxuC3sUHXW0=" target="_blank">https://ed-thelen.org/comp-hist/Zuse_Z1_and_Z3.pdf</a>><br>
> <br>
> On Fri, 7 Jul 2023 at 18:34, Evan Koblentz via Members <<a href="mailto:members@lists.sigcis.org" target="_blank">members@lists.sigcis.org</a> <mailto:<a href="mailto:members@lists.sigcis.org" target="_blank">members@lists.sigcis.org</a>>> wrote:<br>
> <br>
> What are some good articles addressing why Zuse, Aiken, Stibitz, etc.<br>
> decided to use binary (or not)?<br>
> <br>
> -- <br>
> Evan Koblentz<br>
> <br>
> New Jersey Institute of Technology<br>
> - Senior Writer, Office of Communications and Marketing<br>
> - Adjunct Instructor, Ying Wu College of Computing<br>
> - Faculty/Staff Advisor, NJIT Lego Club<br>
> <br>
> <a href="mailto:evank@njit.edu" target="_blank">evank@njit.edu</a> <mailto:<a href="mailto:evank@njit.edu" target="_blank">evank@njit.edu</a>><br>
> (973) 596-3065<br>
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> <br>
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