Development of calculating devices
Electromechanical calculators
Tradicionalni kineski abacus
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Although attempts have been made to create high-quality electric-powered calculators since the late 19th century, due to underdeveloped technology, these calculators were bulky, heavy, and consumed significant amounts of electricity because they required a hot cathode to operate, which in turn heated up the rest of the mechanism, requiring cooling in order to function properly.
The first calculator with an electric motor is considered to be the Autarith, designed by Alexander Rechnitzer in 1902.
The first calculator with an electric motor is considered to be the Autarith, designed by Alexander Rechnitzer in 1902.
Skeniraj kod mobitelom i uperi kameru u sliku da pokreneš AR.
Tradicionalni kineski abacus
Skeniraj kod mobitelom i uperi kameru u sliku da pokreneš AR.
Enormus Kilowatts
The amount of electricity consumed by the first electromechanical calculators is best illustrated by the example of the ENIAC from 1946, which consumed around 150 kilowatts of electricity while performing only four basic arithmetic operations.
In contrast, a modern calculator today, capable of performing all possible mathematical operations, consumes less than half a milliwatt, which is three hundred million times less.
In contrast, a modern calculator today, capable of performing all possible mathematical operations, consumes less than half a milliwatt, which is three hundred million times less.
Casio 14-A
The Japanese company Casio Computer Company released the Casio 14-A model on the market in 1957, which is considered to be the world's first almost entirely electric compact calculator.
It was the size of a table and weighed a very impractical 140 kilograms. The number 14 in the name indicated that it had a capacity of 14 digits.
It was the size of a table and weighed a very impractical 140 kilograms. The number 14 in the name indicated that it had a capacity of 14 digits.
"Only" 15 kilograms
The first fully electronic desktop calculator in the world was created by the British company Bell Punch/Sumlock in 1961. It was called ANITA (A New Inspiration To Arithmetic/Accounting).
The Mark VII model was sold in Europe, while the Mark VIII model was sold in Britain and the rest of the world. ANITA had a significant advantage over its competition with its quiet operation and a weight of "only" 15 kilograms.
The Mark VII model was sold in Europe, while the Mark VIII model was sold in Britain and the rest of the world. ANITA had a significant advantage over its competition with its quiet operation and a weight of "only" 15 kilograms.