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www.ti.com/about-ti/company/history.html

We develop the first electronic hand-held calculator (Cal Tech) in 1967 while also focusing our efforts on developing faster, smaller and more powerful TI chips. The Apollo Lunar Exploration Module containing TI components lands on the moon during this decade.

metro.co.uk/2019/03/06/brilliant-inventor-co-created-first-handheld-calculator...

A ‘brilliant’ pioneer of handheld computing who was one of three men who invented the handheld calculator for Texas Instruments in 1967 has died aged 86. The primitive ‘Cal Tech’ prototype ...

en.wikipedia.org/wiki/Calculator

The first handheld calculator was a prototype called "Cal Tech", whose development was led by Jack Kilby at Texas Instruments in 1967. It could add, multiply, subtract, and divide, and its output device was a paper tape. 1970s to mid-1980s

www.computerworld.com/article/2541155/ti-s-first-handheld-calculator-is-now-a...

Nevertheless, a working model was delivered 18 months later, in 1967 -- giving TI the world's first electronic handheld calculator. [ Related: Tech event calendar: Upcoming shows, conferences and ...

theworldnews.net/gb-news/brilliant-inventor-who-co-created-first-handheld...

The Smithsonian says that the three had made enough progress by September 1967 to apply for a patent, which was subsequently revised before the final application in June 1974. Handheld calculators paved the way for the smartphones we used today: Apple co-founder Steve Wozniak raised money to found the company by selling an HP handheld calculator.

www.pbs.org/transistor/background1/events/calc.html

Invention of the Hand-Held Calculator. 1967. ... this portable calculator certainly surpassed the all-transistor calculator released just a year earlier -- that calculator weighed 55 pounds and ...

www.answers.com/Q/Who_invented_the_first_hand-held_calculator_in_1967

Who invented the first hand-held calculator in 1967? In 1967, first handheld calculator invented by a Texas Instruments group lead by Jack Kilby, who in July of 1958, build an integrated chip ...

www.vintagecalculators.com/html/hand-held_calculators.html

The first battery-powered, hand-held calculators. These first hand-held, battery-powered, models which were developed by Sharp, Sanyo, and Canon were all launched in Japan in 1970. The exact sequence that they went on sale is difficult to establish, but the order here is believed to be correct.

www.vintagecalculators.com/html/ti_cal-tech1.html

The three engineers envisioned building an IC-based, battery-powered "miniature calculator" that could add, subtract, multiply, and divide, yet still fit in the palm of your hand. After two years of development, they completed the first hand-held calculator in 1967.

edtechmagazine.com/.../2012/11/calculating-firsts-visual-history-calculators

The device featured user-definable keys (with 35 keys controlling more than 80 operations) and was the first HP pocket calculator with base conversions (octal and decimal). The calculator cost $795 when it launched in 1974. In 1975, during the first joint U.S.-Soviet space flight, it became the first handheld calculator in outer space.