First handheld calculator headlines auction of mathematical treasures
Handheld Electronic Calculator Prototype - Texas Instruments Cal Tech | National Museum of American History
Handheld Electronic Calculators | Whipple Museum
Sinclair Executive - Wikipedia
Calculator - Wikipedia
HP 35 - The world's first pocket scientific calculator from 1972 - YouTube
TI Cal-Tech: World's First Pocket Electronic Calculator
Hewlett-Packard Introduces the HP-35, the First Handheld Scientific Calculator : History of Information
HP-35 - Wikipedia
File:Vintage Texas Instruments Model SR-10 Pocket LED Calculator, First of a Line of TI "Slide Rule" Models, Sealed Battery, Price - 149.95 USD, Circa 1972 (9304906070).jpg - Wikimedia Commons
UConn School of Engineering - #OTD in 1972, Hewlett-Packard marketed the first handheld calculator, the HP-35, so named because it had 35 keys. It was the first calculator to perform logarithmic and
TI enters calculator market, September 21, 1972 - EDN
Calculator Museum
Imperial College London on Twitter: "#OnThisDay 1972: The HP-35, the first scientific handheld calculator, was introduced by @HP. Time to get REALLY geeky in our mentions: what's your favourite-ever calculator? (hello, TI-82
Nerd Alert: 7 Iconic Calculators of Yore
Electronic Calculators—Handheld | National Museum of American History
TI CALCULATOR HISTORY
World's first handheld calculator up for grabs - BBC Newsround
First Handheld Calculator - Decades TV Network - YouTube
Handheld Electronic Calculators | Whipple Museum
37 Year Old Calculator Wins Award | WIRED
TI CALCULATOR HISTORY
Maryland Science Center - Today in Science History: In 1972, the first scientific hand-held calculator was introduced for $395 by Hewlett-Packard. Named the HP-35 for having 35 keys. | Facebook
HP 35: The First Handheld Scientific Calculator - HP History
The Pocket Calculator Race
