the curta calculator
(PDF) The Curta, a Technical Marvel
researchgate.net
the royal family of Liechtenstein invested in Herzstark after WWII
the phrase number crunching comes from how old calculators used to work
made for easy use lol
"I had an idea… I should look at everything backwards… I'll pretend I have already invented everything. What does this kind of machine have to look like, so someone could use it?”
Curta calculator: The mechanical marvel born in a Nazi death camp:
Curta adds, subtracts, multiplies, divides, square and cube roots, continuous multiplication, negative multiplication, standard deviations and all statistical calculations, squares and higher powers, co-ordinates and associated land survey formulae, and every other computation arising in science and commerce. Available on a trial basis. Price $125.00. Write for literature.
"I started to concentrate on possible solutions and at first, naturally, didn't get any further," said Hertzstark. "Later, I had an idea that I should look at everything backwards. I thought to myself, I'll pretend that I have already invented everything. What does this kind of machine really have to look like, so that someone could use it? It... See more