c. 1970 Singer Friden 1166 Calculator with 3" CRT : r/cassettefuturism
HP 9100A/B
Tube Time (@tubetime@mastodon.social) on Twitter: "this is one of the world's first electronic calculators, the Friden EC-130, which came out in 1964! it's a really fascinating machine, so let's look at it
The Calculator Review: The Calculator Want List
Hewlett-Packard 9100A - Wikipedia
Paragon CRT® Lens Calculator App - YouTube
Paragon CRT® Lens Calculator on the App Store
foone🏳️⚧️ on Twitter: "A far more conventional (but beautifully designed!) Soviet calculator was the Iskra 1122 from the 1970s. It used a CRT display, with a unique asymmetric design. https://t.co/qNs3vfXw1N" / Twitter
Friden EC-130 & EC-132
Bonhams : Friden 132 Electronic Calculator. Metal and plastic case, San Leandro, CA, 1965,
SLCE Calculator for Fast and Accurate calculations (Black) | eBay
Reverse-engineering an early calculator chip with four-phase logic
Iskra 1122. Soviet electronic calculator with CRT tube - YouTube
Paragon CRT® Lens Calculator App | Introducing the NEW Paragon CRT® Lens Calculator! The Paragon CRT® Calculator App is a multifunctional app that empowers practitioners and makes... | By CooperVision Specialty EyeCare
Hewlett Packard 9100B Programmable Electronic Calculator
Victor 3900 - Wikipedia
Paragon CRT® Lens Calculator by CooperVision, Inc.
Sigma TR 4412 Table Office Calculator Power Powered 12 Digit BIG Display | eBay
Iskra 221 russian calculator from 1975 | Old calculator, Desktop calculator, Mechanical calculator
Friden EC-130 & EC-132
