信息与通信工程专业介绍(英文版).pptVIP

Brief Introduction to Information and Communication Engineering 2011.5.30 Brief Introduction to Information and Communication Engineering Among all of the essentials for human existence, the need to interact with others ranks just below our need to sustain life. Communication is almost as important to us as our reliance on air, water, food, and shelter. The methods that we use to share ideas and information are constantly changing and evolving. Whereas the human network was once limited to face-to-face conversations, media breakthroughs continue to extend the reach of our communications. From the printing press to mobile phone, each new development has improved and enhanced our communication. The development of Communication development of transmission channel multicore cable—Coaxial Cable—optical fiber 多芯电缆—同轴电缆—光纤 development of Communication components vacuum tube—transistor—integrate circuit—large scale integrated circuit 真空管—晶体管—集成电路—大规模集成电路 development of transmission method telegram— voice —Much carrier modulation—pulse - code modulation 电报--声音—多载波调幅—pcm development of range of message voice —text —graph， image 声音—文字—图形、图像 The development of Communication As with every advance in communication technology, the creation and interconnection of robust data networks is having a profound effect. Early data networks were limited to exchanging character-based information between connected computer systems. Current networks have evolved to carry voice, video streams, text, and graphics between many different types of devices. Previously separate and distinct communication forms have converged onto a common platform. This platform provides access to a wide range of alternative and new communication methods that enable people to interact directly with each other almost instantaneously. The future of Communication （3）5w：whatever where