Early mechanical calculator

Early mechanical calculator

Curta Mechanical Calculator, a small, hand-cranked mechanical calculator introduced by Curt Herzstark in 1948. It can be used to perform addition, subtraction, multiplication, division, and (with more difficulty) square roots and other operations.  considered the best portable calculators available until they were displaced by electronic calculators in the 1970s.

Curta Mechanical Calculator, a small, hand-cranked mechanical calculator introduced by Curt Herzstark in 1948. It can be used to perform addition, subtraction, multiplication, division, and (with more difficulty) square roots and other operations. considered the best portable calculators available until they were displaced by electronic calculators in the 1970s.

A Vintage Mechanical Calculator Spins Wildly While Trying to Divide by Zero

A Vintage Mechanical Calculator Spins Wildly While Trying to Divide by Zero

A vintage Facit mechanical calculator spins wildly while it tries to divide by zero in a video posted by MultiGlizda. Dividing a number by zero gives an undefined result, so the machine is i…

Vintage Mechanical Calculator RTS Zagreb Calculating Machine From 1960's by VintageshopSerbia on Etsy

Vintage Mechanical Calculator RTS Zagreb Calculating Machine From 1960's by VintageshopSerbia on Etsy

Vintage Mechanical Calculator Shows Why It's a Bad Idea To Divide by Zero

Vintage Mechanical Calculator Shows Why It's a Bad Idea To Divide by Zero

Mechanical Calculator,Zero,Funny Memes,Architecture,Shower,Vintage,School,Design,Awesome

800px-Mechanical-calculator-Brunsviga-15-01.jpg (800×533)

800px-Mechanical-calculator-Brunsviga-15-01.jpg (800×533)

vintage calculator / retro mechanical calculator / by BOULOTDODO

vintage calculator / retro mechanical calculator / collectible slide adder / pink & gold / midcentury mathematics made in Hong Kong c.1960s

vintage calculator / retro mechanical calculator / by BOULOTDODO

A mechanical calculator made in Switzerland.  Used by car rallyists back in the day.

A mechanical calculator made in Switzerland. Used by car rallyists back in the day.

Replica of mechanical calculator invented by Leonardo Da Vinci | History of the Computer.

Replica of mechanical calculator invented by Leonardo Da Vinci | History of the Computer.

Calculators - The Difference 18 Years Makes http://knowtechie.com/calculators/

Calculators - The Difference 18 Years Makes http://knowtechie.com/calculators/

Friden Model STW-10 Electro-Mechanical Calculator... I used one of these on my first job.

Friden Model STW-10 Electro-Mechanical Calculator... I used one of these on my first job.

Dark Roasted Blend: Stunningly Intricate: Curta Mechanical Calculator

Dark Roasted Blend: Stunningly Intricate: Curta Mechanical Calculator

Curta mechanical calculators. I'm reading William Gibson's "Pattern Recognition", and these show up.

Curta mechanical calculators. I'm reading William Gibson's "Pattern Recognition", and these show up.

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