The World's First Handheld Calculator Is Up for Auction
Brilliant' inventor who co-created first handheld calculator in 1967 dies | Metro News
John Wolff's Web Museum - Early Electronic Calculators - Desktop
Abacus: the first calculator | Free stock photos - Rgbstock - Free stock images | COBRASoft | January - 12 - 2010 (63)
HNF - Desk and pocket calculators – Electronic mass products
Nerd Alert: 7 Iconic Calculators of Yore | PCMag
First handheld calculator headlines auction of mathematical treasures
The Calculators Brief History: When was the calculator invented
A history in calculators
National Museum of American History
Calculator - Wikipedia
Pascal's calculator - Wikipedia
World's first pocket calculator goes up for auction: 'Exceptionally rare' 17th century machine made of wood could fetch £100,000 | Daily Mail Online
Electronic Calculators—Handheld | National Museum of American History
A Brief History of Calculators in the Classroom
Design history of the pocket calculator
The Calculators Brief History: When was the calculator invented
Mechanical calculator - Wikipedia
BESK. Binary Electronic Sequence Calculator. Sweden's first electronic computer. It was developed by the Swedish board for computing machinery and for a short time ti was the fastest computer in the world.
Mark-->'s Early LED Calculators
World's first handheld calculator up for grabs - BBC Newsround
TI Cal-Tech: World's First Pocket Electronic Calculator
