While adding machines, sometimes referred to as printing calculators, may seem outdated and obsolete, they remain indispensable for offices all over the world.

Put away the laptop, the calculator and the adding machine - and try filing your taxes using an abacus. That's right, an abacus.

Wolverine Adding Machine (1941) In the 1930s and ’40s, the closest that consumers could get to a mainstream commercial computer was a mechanical adding machine.

Woodwork hacker Matthias Wandel has built this amazing binary marble adding machine. The device can store the binary states of six bits, and use them to add numbers from one to 63. It works with ...

While adding machines, sometimes referred to as printing calculators, may seem outdated and obsolete, they remain indispensable for offices all over the world.