A new working model of a 2,000-year-old astronomical calculator reveals the sophistication and precision of mathematics, astronomy and engineering in the ancient world. A new working model of the ...

“The first digital use of the transistor for consumers was in a calculator,” says Rick Bensene, curator of the Old Calculator Web Museum. Our series on the birth of the transistor — and with it, the ...

Paranoid accountants rejoice! You may now buy calculators with hidden, motion-activated cameras in them, saving low-def video to internally-housed SD cards. The idea looks goofy, but is ...

This chaos of churning gears comes down to a fairly simple explanation. Division is just a series of sequential subtraction, and division by zero is the sequential subtraction of zero, over and over ...

It was 1985 when Guy Ball saw his first old calculator at a Salvation Army. “It was really cool-looking and had this white plastic sculpted body. The numbers lit up in a pretty blue fluorescent tone.