FIRST digital calculator (1 янв 1970 г. – 31 дек 1979 г.)
Описание:
The Japanese produced the first digital calculators and the some US companies created some that resembled the Japanese's models. The microchip that was used allowed these types of calculators to be pocket-sized.Добавлено на ленту времени:
Дата:
1 янв 1970 г.
31 дек 1979 г.
~ 10 years