【正文】
So what does our society need? ? We need talents who are Information and Communication Engineering majors。 光通信:中國 烽火臺、希臘 — 火炬的位置表示字母符號 聲通信:中國 — 擊鼓鳴金 ( 2) Beginning and turning point: 1837Morsetelegram; 1876Belltelephone; 1895Marconiradio The development of Communication ? development of transmission channel multicore cable— Coaxial Cable— optical fiber 多芯電纜 — 同軸電纜 — 光纖 ? development of Communication ponents vacuum tube— transistor— integrate circuit— large scale integrated circuit 真空管 — 晶體管 — 集成電路 — 大規(guī)模集成電路 ? development of transmission method telegram— voice — Much carrier modulation— pulse code modulation 電報 聲音 — 多載波調(diào)幅 — pcm ? development of range of message voice — text — graph, image 聲音 — 文字 — 圖形、圖像 The development of Communication ? As with every advance in munication technology, the creation and interconnection of robust data works is having a profound effect. ? Early data works were limited to exchanging characterbased information between connected puter systems. Current works have evolved to carry voice, video streams, text, and graphics between many different types of devices. Previously separate and distinct munication forms have converged onto a mon platform. This platform provides access to a wide range of alternative and new munication methods that enable people to interact directly with each other almost instantaneously. The future of Communication ( 3) 5w: whatever wherever whoever whomever whenever 任何人在任何時間、任何地點接收來自任何人的任何信息 The future of Communication Mobile Cellular Network