
You can think the cell-phone is new devices. It is true that cell-phone is the revolution as a communication tool. They originated in the 1920's. Radios were used since 1921. Features were put into these radios in the 1940's and they were used by police. The concept of the cellular phone was developed in 1947 which originated from the mobile car phone. The first actual cell phone was invented in 1973 by Martin Cooper. He worked at Motorola at that time and other assisting inventors who used the idea of the car phone helped him. The first time people used cell-phone in the public place was in 1984. It was really large and expensive. In 1986, the FCC (Federal Communication Commission) decided to increase the frequencies to allow research for better connections and they they made it. This allowed calls to pass from tower to tower.
So, how people have developed and used the cell-phone these days and how the cell-phone affect in people's lives and education......
They are using the cell-phone in various way. It is not only for the communication. Of course, the most biggest part is to communicate with others. Besides, they can checks weather forecast, play games, updates the Internet blog, watch TV and online shop (Starbucks, Dunkin, Pizza, even Underwear). Also, they can checks whether a book has arrived at the library. In addition to the Internet connection, it has function of the digital camera, a music player (MP3), Alarm and texting massage. People compressed hundreds of function into the cell phone. Especially in Korea, they mark students attendance by the cell-phone instead the teachers call the students' name in the class for attendance. They are checked by their cell-phone. This is the function of ID. They don't need show or sweep their ID. More interestingly, they pay fare of bus, subways and even taxi. It is like credicard card. It is the novel of compressing multifunction.
However, there is not only advantage, but also disadvantage. If you leave your wallet at home, you can not notice for the whole day, but if you lost your cell-phone, your life will start crumbling


