// todo need optimize like in event.jsp. Add indexing or not indexing this page. The Modem. (1 янв 1948 г. – 1 янв 1950 г.) (Лента времени)

The Modem. (1 янв 1948 г. – 1 янв 1950 г.)

The early modems were used by the U.S. Air Force in 1950s and was used for commercial uses in the 1960s.

10 окт 2017

1 янв 1948 г.

1 янв 1950 г.

~ 2 years

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