A Pulsar calculator watch (photo: The Smithsonian) There were a few problems. First, the watch was thick. Despite its size, it had tiny keys, so you had to use a little stylus to push the keys ...

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 ...

While we're talking about cult classic watches, the Casio Calculator watch deserves a mention. Perhaps best known from its appearance on the wrist of Marty McFly in the hit film, Back to the ...

This is an actual calculator watch that also happens to have some ... the Apollo Guidance Computer was the first device to use silicon microchips, which were developed specifically for this ...