Development of Calculating Devices
Digital Calculators
Tradicionalni kineski abacus
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The development of integrated circuits, or chips, in the 20th century, solved the problems of bulkiness, overheating, high power consumption, and unreliability that calculators had until then.
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Tradicionalni kineski abacus
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The first true digital calculator that used four LSI integrated circuits for all calculator functions was the Sharp QT–8D from 1969.
The first pocket calculator was a prototype called Cal Tech from 1967 by Texas Instruments.
The first pocket calculator was a prototype called Cal Tech from 1967 by Texas Instruments.
Od skupog do besplatnog
Throughout most of history, calculators have been very expensive devices.
For example, in 1956, Olivetti's mechanical calculator, the Divisumma 24, cost 325,000 lira, while the new Fiat 500 Nuova cost 465,000 lira.
For example, in 1956, Olivetti's mechanical calculator, the Divisumma 24, cost 325,000 lira, while the new Fiat 500 Nuova cost 465,000 lira.
From expensive to free
Mass production of chips and fierce competition for market share led to a drastic reduction in prices in the 1980s, and today you can get a calculator as a free application for your mobile phone or personal computer.