wirelesscommunication including the satellite on when the bus started its course, where it is located in its course, and the arrival and departure time and name of each bus stop.
The terminal installed inside each bus transmits its GPS(Global Positioning System) location through satellites to BMS(Bus Management System). By using the GPS location, data on the locatio
Communication processor used to route packets of data through different networks, ensuring that the data sent gets to the correct address
Analog signal is represented by a continuous wave form that passes through a communications medium and has been used for voice communication.
Analog devices : Telephone handset, Speaker on computer, iPod earphone
Digital signal is a discrete, binary wa
Ⅰ. 개요
미국에서 유선방송은 1940년대에 난시청지역의 텔레비전 시청을 돕기 위한 제한적인 지역 안테나 시스템(Community Antenna System)으로 부터 출발하였다. 역사적으로는 1948년 미국의 펜실바니아와 오레곤에서 처음으로 케이블 시스템이 탄생한 것으로 기록되어 있으며 유선방송이 광고주들로부터
Community and personalizing based portal Daum, Game and searching service based portal Naver, and wire and wireless linkage community portal Nate that is under the huge firm’s supporting.)
At one time, bubble criticism was mentioned because of profitality. But now, some company as I mentioned above, earns money steadily by various profit model. So market and investors are pay attention to a i
What is Wireless?
Electromagnetic waves rather than some form of wire or cable
Enable individuals to conduct mobile computing
Wireless – No Wire
Mobile – Changes its location over time
Advantages:
Small enough
Sufficient computing power
Communicative wirelessly