Which adding machines for your office are best? While adding machines, sometimes referred to as printing calculators, may seem outdated and obsolete, they remain indispensable for offices all over the ...

For most of human history, doing arithmetic, while sometimes aided by devices like the abacus or adders, was fundamentally an act of human intelligence. In the 17th and 18th century, a few natural ...

Q: I have two early adding machines, an Odhner and a Remington Rand Model No. 93. Do they have any value? I would like to sell them. — Ona, Willowbrook, Ill. A: Most early calculators and adding ...

How many 555 timers does it take to add up two 10 digit numbers? [Alan’s] 555 Adding Machine does it with 102 of them, he designed the machine as an extreme entry to the 555 contest and the original ...

Some of the interest could be nostalgia, but rarity will always drive prices up The condition of the machine matters Whether you’re buying or selling, always do your research Attending an auction can ...

Which adding machines for your office are best? While adding machines, sometimes referred to as printing calculators, may seem outdated and obsolete, they remain indispensable for offices all over the ...