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funfact.wiki | 펀팩트 위키
2026년 3월 12일 07:07
페퍼노트 (215613fa)
In 1945, the US FCC chairman predicted handheld wireless telephones would arrive soon. Instead, radio spectrum went to television, delaying mobile communication by decades. AT&T forecast 900,000 US mobile users by 2000; the actual figure was 109 million.
연결된 태그: Mobile communication, Telephone