Huawei cell phone recycling touchscreen | Obo Electronics (certified) | Zhengzhou touch screen mobile phone

1832. Russian diplomat Schilling was inspired by the famous physicist at Oster electromagnetic induction theory, to produce using current meter pointer deflection to receive information telegraph. June 1837, the British youth Cook won the first telegraph invention patents. He made the first telegraph find application in the railway. However, this approach is very convenient and practical, people really can not put a practical stage. History to this critical time, as if stopped down, had to wait for a painter to resolve. In 1832, an American doctor on board ship mail Jackson sailing in the Atlantic Ocean, to the travelers who speak electromagnet principle, passengers 41 years of American painter Morse was intrigued. France's signal system was only available with a vision clinics and Communications miles ①. Morse dream with the current transmission of electromagnetic signals to transmit information between the twinkling of an eye to the thousands of miles away. After three years of study, in 1835, the first telegraph appeared. But how the telegraph and human language linking where recycling mobile phone touch screen, is placed in front of Morse's a big problem professional recycling mobile phone touch screen, recovering the original mobile phone touch screen in an instant hint of inspiration comes, he write down in a notebook this paragraph if the current is swift, and if it can not stop walking ten miles, I just let it all over the world. Current Just stop for a moment, there will be a spark, the spark is a symbol, no spark is another symbol, no spark a long time is a kind of symbol. There are three kinds of symbols can be combined to represent numbers and letters. They may be composed of letters, characters can be transmitted by wire. Thus, far from able to spread the message of new tools can be realized! 'Only the corresponding transmission media transmission technology used, to be able to be embodied as an upper layer traffic channel available for use, since the transmission medium is closely integrated with the transmission technology, therefore, the design must be considered and transmission techniques take advantage of the transmission medium itself inherent characteristics, various features of the transmission medium will have different effects on the design of transmission technology, are hereinafter explained. (Shang) Bandwidth: is available spectrum width. High bandwidth transmission medium that can carry a higher bit rate, such as an optical fiber. If the bandwidth of the transmission medium is affected by other factors change, you must also for these situations, the design of different transmission techniques. BER: Under the high error rate of transmission environment will certainly require the use of more sophisticated and more effective detection and correction technology