The modern telephone is the culmination of work done by many individuals. A. Graham Bell and the first patent of the telephone. Mobile phone, the invention of the computer, television and internet technology. Electromagnetic transmitters and receivers.
23.12.2010 |
Electronics |
Коммуникации, связь, цифровые приборы и радиоэлектроника |
Язык: английский |
Просмотры: 90
