1 янв 1972 г. - Invention of the Pocket Calculator
Описание:
In 1972, the first modern electric calculators were created by three engineers. This marked the beginning of pocket calculators which would later evolve into digital calculators that we have now on various software and technology.Добавлено на ленту времени:
Дата:
1 янв 1972 г.
Сейчас
~ 52 г назад
