Lmst

@rc2014
#retrocalculators

A Texas Instruments TI-52 scientific calculator from about 1985, turned upside down so it displays 0.7734 as hello

Translating infrared signals into concentrated heat near thermal paper is advanced heat-bending.

https://www.keesvandersanden.nl/calculators/hp82240.php

#retrocomputing #retrocalculators

Ever seen an abacus with force feedback carry to notify you of overflow?

https://www.youtube.com/watch?v=u9D93vg_cqc

#retrocomputing #retrocalculators

Having a tidy-up and just stumbled across my ancient Soviet computer... #retrocomputing #retrocalculators #счёты

A LEGO figure standing on the edge of the Soviet abacus. The beads on the abacus are between two-thirds and three-quarters the size of the minifig.

A well used Soviet abacus (счёты in Russian) showing the number 42.

#Tech #Calculator #RetroTech #Retro #RetroTechnology #RetroCalculators #VintageCalculator #Magazine #MITS

An advertisement for the MITS 941M handheld calculator/metric converter, titled 'In a World Gone Metric - The 941M Has the Answers.' The ad features an image of the calculator, showing its keypad and digital display. The text details the calculator's functions, which include 36 metric to U.S. and U.S. to metric conversions for length, liquid, volume, area, mass, and temperature, along with five arithmetic operations: add, subtract, multiply, divide, and percentages. It highlights the features such as full operation memory, algebraic mode of entry, floating decimal, leading and trailing zero suppression, 8-digit display, and automatic display cutoff to conserve battery life. The prices are listed as $149.95 for the assembled version and $129.95 for the kit. Accessories include an AC adapter for $6.95 and NiCad batteries with a recharger for $15.00. The warranty information notes 90 days on parts and labor for the kit and 2 years for the assembled version. The size of the calculator is given as 146.05mm x 82.55mm x 38.10mm (5¾" x 3¼" x 1½"). The bottom of the ad includes contact information for MITS Inc. in Albuquerque, New Mexico, and a mail-in order form

#Tech #Calculator #RetroTech #Retro #RetroTechnology #RetroCalculators #VintageCalculator #Magazine #MITS

An advertisement for the MITS 7440 Desk-Top Scientific Calculator, titled 'Your Assistant for Expert Results.' The ad features an image of the calculator, showcasing its keypad and LED display. The text describes the calculator's capabilities, including basic arithmetic functions, transcendental functions, and the ability to handle algebraic problem entry with deep nesting parentheses. It highlights features such as a fourteen-digit LED display with ten-digit precision for mantissa and two-digit precision for exponent, trigonometric functions, and a separate memory register. The ad also mentions the calculator's automatic error indications for overflow, underflow, and forbidden operations. The keyboard has thirty-six keys, with separate clear and clear entry keys to prevent errors. The prices are listed as $199.95 for the kit and $299.95 for the assembled version. Additionally, the ad promotes the Programmer: Desk-Top Computer, which can be used with the MITS 7440 for programming tasks. The bottom of the ad includes a warranty note and contact information for MITS Inc. in Albuquerque, New Mexico.

Cool.

"Since 2016, Maletic has amassed about 250 vintage calculators of all shapes and sizes. He’s putting about 100 pieces from his collection on display for a pop-up exhibit, “Calculators 1968-1983,” opening Aug. 18-20 in Portland."

https://www.youtube.com/watch?v=2On8mhPtZ3I

#RetroCalculators #Calculators #VIdeos #USA #Technology #History

Today I bought a used shelf with glass doors. And just finished moving the entire calculator collection. Much more spacious than before and dusting will not be necessary as often in the future.
#RetroComputing #RetroCalculators #Casio #Sharp #HewlettPackard #TexaxInstruments

@LordArse Cool. @EdS

#RetroCalculators #Calculators

Calculators now emulated on the Internet Archive.

"The Calculator Drawer is smaller than these other collections, but they possess a hearty collection of graphing and simple Calculators, emulated in MAME and with an additional layer of presenting the calculator itself, as a clickable graphical object, which you can then do math and graphing on."

https://blog.archive.org/2023/01/29/a-calculated-move-calculators-now-emulated-at-internet-archive/

#Calculators #RetroCalculators #History #Technology #Emulation

@EdS

One of my old calculators. And yeah, I do occasionally use it. #xp #retrocalculators

A heady mix of #retrocomputing, #1970s #retrocalculators & #photography for Wednesday. Here's my HP-45: still in perfect working order, having previously been owned by a nuclear/aviation professor. (If you want to try one out, I wrote a terminal-based simulator which runs the original HP-45 ROM code for Z80 CP/M, Mac, Windows & Linux: HP45TERM is on my website.)
—
#calculator #retro #rpn

Snapped at the technical museum in Prague during the summer.

#retrocomputing #retrocalculators #commodore

As you know, I also like older calculators. I got this little #Commodore #SR4190 years ago as an addition to a #Sinclair #ZX81. I'm still amazed that the two got along so well in the package. With a new battery pack for a wireless phone it runs nearly like the first day.
#RetroComputing #RetroCalculators

Turns out that Mastodon not only has a #retrocomputing community, but also a #retrocalculators community. So here's "The Usborne Pocket Calculator Book" (1982), explaining RPN.
—
#calculators #books

A page of a children's guide to calculators, showing a sketch of an HP-32E calculator and explaining how it uses RPN.

#Olympia calculator #RAE4/30 with 15 digit Nixie tubes. Not really calcs something in the moment, but our radio mate works on it.
#RetroComputing #retrocalculators

Interesting artefact.

"The Sinclair Instrument Wrist Calculator was a simple 8-digit calculator, that was only sold as a mail-order kit. It was released in February 1977 by Sinclair Instrument, a company ran in parallel with Sinclair Radionics. It originally sold for £9.95 (plus VAT)."

https://www.computinghistory.org.uk/det/52845/Sinclair-Instrument-Wrist-Calculator/

#Calculators #CalculatorHistory #RetroCalculators

An interesting rarity: a Commodore C202 adding machine.

#RetroCalculators #Technology #AddingMachines #Calculators

https://twitter.com/DatassetteUser/status/1156809722856660992

@EdS

A post on Olivetti’s Programma 101 calculator from the 1960s.

#RetroCalculators #RetroComputing #Calculators #ComputerHistory #Italy #Olivetti

https://spectrum.ieee.org/tech-history/silicon-revolution/the-calculator-that-helped-land-men-on-the-moon