The videotex, a link-up between a computer (sometimes with a decoder and mini keypad of a television) and the phone systems of its subscribers, was introduced, allowing easy information retrieval by its users.
它是利用電話機與電腦（或附有解碼機及迷你鍵盤的電視機），連接到電信局的電腦資料庫內，供訂戶檢索資料。