The used a cassette recorder to store the photo and play it back. https://spectrum.ieee.org/first-digital-camera-history?fbclid=IwdGRzaAPVVKFjbGNrA9VS7mV4dG4DYWVtAjExAHNydGMGYXBwX2lkDDM1MDY4NTUzMTcyOAABHmbAC3KQ45zuuvHG-fgR6vTCncLee1hqvshLQ0ImklaCVZqVRjvVEz2FdmeY_aem_eXezm2tGP2Rnsz_HIO7IEQ
Archive for the ‘electronics history’ Category:
2025-09-11 Inventor Performs Synthesized Music On The Ondioline
Steve Allen hosts the ?Tonight Show? a long, long time ago, back in the black and white days of TV. I’m guessing the early 1960s. https://www.facebook.com/reel/758211690309657/?mibextid=9drbnH&s=yWDuG2&fs=e
2025-07-08 Full Restoration Of Old AM Transistor Radio
This is hard to believe. It’s a lot of work to do on a cheap AM radio. But it gives me a lot of ideas. I wonder how many hours it took to do this, we see it happening in nust a few minutes. https://www.facebook.com/restorationpretty/videos/591611740013679/?mibextid=9drbnH&s=yWDuG2&fs=e
2024-10-12 First Ever Images Of Electric Charges Across Semiconductor Materials
Researchers capture first ever images of electric charges across summit conductor materials within a solar cell. Times in picoseconds. https://pv-magazine-usa.com/2024/10/11/researchers-capture-first-ever-images-of-electric-charges-across-semiconductor-materials-within-a-solar-cell/t
2024-10-08 Transistor History – Raytheon, CK722, etc.
Long article https://sites.google.com/site/transistorhistory/Home/us-semiconductor-manufacturers/raytheon-part-one-2 A comprehensive history of the Raytheon corporation. Also information about other companies.
2024-03-29 FM Crystal Set Uses Helical Resonator For Tuning
This is a long article but a very interesting project. It uses HSMS-2850 Schottky detector diodes in a discriminator. He uses WE 1200 ohm sound powered headphones. He’s Canadian. https://electronbunker.ca/eb/FMCrystalSet.html
2024-03-22 The 555 Chip Under Microscope
The NE555 and some interesting information about it. A YouTube short by @Evilmonkeyzdesignz.
2024-03-15 Ferranti Argus “Hearing Aid” Computer
In the “Original Series” chapter this very interesting Wikipedia article talks about the “hearing aid computer” that used the OC-71 germanium transistors which were used in hearing aids and could go only up to 25kHz clock rate. That was quite slow – tube computers could clock at 500kHz. Later models used faster transistors and could
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2023-11-14 Amsec, Gary Lorenz, John Darjany – history of campus card
I finally found a bit of history about Gary Lorenz. He and I were high school friends. In 1972 he and John Darjany founded a company, Amsec, to make a “campus card system” for California Polytechnic University, Pomona. In 1974, Amsec was purchased by R.D. Products. A brief history of the campus card industry This
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2023-11-06 Reproduction Antique Radio Tubes and sets
I’ve been discussing the restoration of a hundred y.o. radio, and I thought about the retro light bulbs that look like incandescents but use LED filaments. Someone should make some old tubes that are actually using LEDs that look like the filaments, but just for decorative purposes. The glass envelope would look like the tube;
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