While adding machines, sometimes referred to as printing calculators, may seem outdated and obsolete, they remain indispensable for offices all over the world.

Other adding machines are found scattered in the NMAH collections. The mathematics collection also has collections of adders, bookkeeping machines, and calculating machines, which are described ...

Posted in Retrocomputing Tagged adding machine, nixdorf, vacuum tube computer ← UV Printing PCBs The Three Cent Motor Controller → ...