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 used a ...

Form is temporary, function is permanent. The most important inventions are the ones that relate to the human condition, and they crop up over and over again. Below, Houston shares five key insights ...

Before smartphones exploded on the scene in the late 00s, there was still a reasonable demand for pocket-sized computers that could do relatively simple computing tasks. Palm Pilots and other PDAs ...

Before there were smartphones, there were personal digital assistants like the Palm Pilot, Handspring Visor, and Compaq/HP iPAQ line of devices. And before those, there were really basic PDAs, like ...

Radio Shack had a long history of buying things overseas, having their name slapped on them, and selling them in the United States. That was the case with the Tandy Pocket Computers, which were in ...

Clive Sinclair, who invented the Sinclair ZX Spectrum, an early personal computer, died of cancer Thursday at age 81, his family confirmed. Sinclair was an inventor with an impressive list of ...