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Powering up a module from the IBM 604: an electronic calculator from 1948

Ken Shirriff Blog · published 7 June 2026

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28 Jun 2026
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28 Jun 2026
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dragonflydigest.com
Lazy Reading for 2026/06/28 Read at the source ↗
28 Jun 2026

Links from this post

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https://static.righto.com/images/ibm-650-thyratron/ibm-604.jpg
static.righto.com
https://static.righto.com/images/ibm-650-thyratron/tube-module2.jpg
static.righto.com
https://patents.google.com/patent/US2637763A
patents.google.com
https://youtu.be/X_OLAV1GwQ0?si=PM3sBUv-utbhy4Hh&t=314
youtu.be
https://www.righto.com/2018/01/ibm-mainframe-tube-module-part-ii.html
righto.com
https://static.righto.com/images/ibm-650-thyratron/ibm-604-ad.jpg
static.righto.com
https://archive.org/details/time-1952-11-10/Time%201952-03-31/page/65/mode/1up
archive.org
https://static.righto.com/images/ibm-650-thyratron/tube-diagram.jpg
static.righto.com
https://bitsavers.org/pdf/ibm/604/227-7609-0_604_CE_man_1958.pdf
bitsavers.org
https://static.righto.com/images/ibm-650-thyratron/2d21.jpg
static.righto.com
https://www.righto.com/2016/05/inside-card-sorters-1920s-data.html
righto.com
https://arxiv.org/pdf/2103.05705
arxiv.org
https://www.columbia.edu/cu/computinghistory/cpc.html
columbia.edu
https://bsky.app/profile/righto.com
bsky.app
https://www.righto.com/p/index.html
righto.com
https://bitsavers.org/pdf/ibm/604/22-5279-10_604_OperMan.pdf
bitsavers.org
https://ed-thelen.org/comp-hist/IBM-604.html
ed-thelen.org
https://www.google.com/books/edition/The_Canadian_Mining_and_Metallurgical_Bu/3pRsdUnB5roC?hl=en&gbpv=1&pg=PA223&printsec=frontcover
google.com
https://static.righto.com/images/ibm-650-thyratron/NMAH-AHB2016q087472.jpg
static.righto.com
https://americanhistory.si.edu/collections/object/nmah_334753
americanhistory.si.edu
https://static.righto.com/images/ibm-650-thyratron/schematic.jpg
static.righto.com
https://physics.wm.edu/~inovikova/phys314/notes/swavescattering0410.pdf
physics.wm.edu
https://www.righto.com/2018/09/glowing-mercury-thyratrons-inside-1940s.html
righto.com
https://frank.pocnet.net/sheets/049/2/2D21.pdf
frank.pocnet.net
https://static.righto.com/images/ibm-650-thyratron/2d21-symbol.jpg
static.righto.com
https://frank.pocnet.net/other/Philips/Philips_ThyratronsForModernIndustry_1961.pdf
frank.pocnet.net
https://frank.pocnet.net/sheets/137/5/5915A.pdf
frank.pocnet.net