Empire of the Sum: The Rise and Reign of the Pocket Calculator. By Keith Houston. W.W. Norton & Company; 384 pages; $32.50. To be published in Britain in October; £25 WHEN WAS the last time you ...

An engineer worked in a concentration camp on the first pocket calculator. July 6, 2013— -- A Viennese engineer worked meticulously in a concentration camp on the world's first pocket calculator.

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 ...

We’ve all got calculators on our phones, in our web browsers, and even in the home “assistant” that’s listening in on your conversations all day on the off chance you blurt out a math ...

When is a pocket calculator more than just a calculator? [Andrew Menadue] has been pushing the limits of his 1970s Casio FX-502P by adding all sorts of modern functionality via the calculator’s ...

Jerry Merryman, a self-taught electrical engineer who helped design the first pocket calculator, died on Feb. 27 in Dallas. He was 86. His wife, Phyllis (Lee) Merryman, said the cause was heart ...

And then, one dark day in 1972, with the advent of the pocket calculator, the slide rule went the way of the abacus. Why fiddle around with the arcane log scales and indexes required to use a ...

Who needs a pocket calculator when you've got one of the best calculator apps on your smartphone? After all, even an average phone can top the computational powers of a handheld calculator — and ...

Users pull a string out from the pocket calculator-sized device, laying it alongside or winding it around whatever they want to measure. The exact length is digitally displayed on the device's LCD ...