Title Breakthroughs in telephone technology : from Bell to smartphones / edited by Robert Curley

Edition 1st ed Published New York, N.Y. : Britannica Educational Pub. in association with Rosen Educational Services, 2012

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Description 1 online resource (xvi, 127 pages) : color illustrations Series Computing and connecting in the 21st century Computing and connecting in the 21st century Contents Half Title -- Title -- Introduction -- 1. The Development of the Basic Landlline Telephone -- Working Components -- Power Source -- Switch Hook -- Dialer -- Dialer -- Transmitter -- Receiver -- Anti-Sidetone Circuit -- Early Sound Transmitters -- Johann Reis's "Philosophical Toys" -- Gray and Bellis Race for a Patent -- The Search for a Successful Transmitter -- Alexander Graham Bell -- Thomas Augustus Watson -- From Hand-Cranked to Cordless: 100 Years of AT & T Telephones -- Western Electric -- 2. The Development of the Public Switched Telephone Network -- Switching -- Manual Switching Electromechanical SwitchingElectronic Switching -- Digital Switching -- The Switching Network -- Signaling -- Rotary Dialing -- Push-Button Dialing -- Interoffice Signaling -- Transmission -- From Single-Wire to Two-Wire Circuits -- Problems of Interference and Attenuation -- Analog and Digital Transmission -- DSL -- Coaxial Cable -- Microwave Link -- Optical-Fibre Cable -- Terrestrial Radio -- Undersea Cable -- Satellite -- 3. The Principles of Telecommunications Systems -- Analog-To-Digital Conversion -- Sampling -- Quantization -- Harry Nyquist -- Bit Mapping -- Source Encoding -- Huffman Codes -- The Lempel-Ziv Algorithm Run-Length CodesChannel Encoding -- Repetition Codes -- The Hamming Code -- Convolutional Encoding -- Modulation -- Amplitude Modulation and Frequency Modulatlion -- Digital Modulation -- Multiplexing -- Frequency-Division Multiplexing -- Time-Division Multiplexing -- Multiple Access -- Frequency-Division Multiple Access -- Time-Division Multiple Access -- Code-Division Multiple Access -- 4. Faxes and Modems -- The Fax -- Standard Fax Transmission -- History of Fax Technology -- Bits and Bytes -- The Modem -- Development of Voiceband Modems -- Voiceband Modem Operating Standards -- Cable Modems -- DSL Modems 5. Mobile Phones, Videophones, and Internet PhonesThe Cell Phone -- Cellular Communication -- Development of Cellular Systems -- CUL8R:Texting -- The Smartphone -- The Satellite Phone -- The iphone -- The Videophone -- Early Videophones -- Analog Videophones -- Digital Videophone Systems -- Videoconferencing -- VoIP -- Conclusion -- Back Cover Summary Looks at telephone technology, including its history, important contributors, and current state Bibliography Includes bibliographical references (pages 121-122) and index Notes Online resource; title from digital title page (viewed on October 26, 2018) Subject Telephone -- History. Telecommunication -- History Electronics -- History TECHNOLOGY & ENGINEERING -- Telecommunications. Electronics Telecommunication Telephone Telephone -- History. Telecommunication -- History. Electronics -- History. Genre/Form History Form Electronic book Author Curley, Robert, 1955- ISBN 9781615307241 1615307249

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