Телефон

Автор работы: Пользователь скрыл имя, 17 Ноября 2012 в 00:11, реферат

Описание работы

We use the electric telegraph to send written messages to people far away from us. We use the telephone to talk to peo¬ple far away. In many ways the telephone is better than the telegraph as a means of communication. The cost of sending a telegram depends on the number of words in it. We have to make our telegraph message as short as possible, but in a telephone call, we can say a lot of words. A telegram can only be sent from one post office to another. There is a delay be¬fore it can reach the person it is addressed to. The telephone connects you to a person directly. You may have to wait sev¬eral hours for an answer to a telegram. You can ask a per¬son questions and get the answer immediately on the tele¬phone.