Picture the keypad of a telephone and calculator side by side. Can you see the subtle difference between the two without resorting to your smartphone? Don’t worry if you can’t recall the design. Most ...

The popular PCalc calculator app has received a great update for Mac today. The latest version brings a full-on button layout editor to create the exact calculator you want on your Mac – including ...

If you look at the number buttons on a phone -- smart, cell, landline, what have you -- those number buttons will feature, almost inevitably, a uniform layout. Ten digits, laid out on a three-by-three ...

We’ve all heard it a thousand times – they don’t make ’em like they used to. Sometimes, that’s for good reason, but there is a certain build quality to electronics of the mid-20th century that is hard ...

[Amen]’s Rockwell 920 calculator from the 70s was a very impressive piece of hardware for its time. It sported a 16-digit display, a printer, and it could run programs. It even had a magnetic card ...