The calculator watch market was relatively sleepy until 1980 when Casio decided to make them. The CFX-400 was a top-of-the-line scientific calculator that even did hex (photo: [Septagram] Public ...

A classic Casio watch is back in some new finish options. The CA53 collection – better known as the Casio Calculator watch – now comes in a finish dedicated to the original Casio personal ...

Casio released its first calculator watch, the C-80, in 1980. A follow-up, the Databank Telememo CD-40, came in 1984 and quickly became the height of geek-chic. It was the first watch that let you ...