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dc.date.accessioned2016-03-04T05:05:54Z
dc.date.available2016-03-04T05:05:54Z
dc.date.issued1979-01
dc.identifier.urihttp://hdl.handle.net/123456789/4232
dc.description.abstractMan first used the postal service in conveying an intention or information, and then contrived the electric communication. However, the cable needed subsequent translations on both sides and also entailed difficulties in its use due to limits in contents of communication and other defects. Accordingly, it was necessary to convert the human voice into an electric signal, directly transmit it and talk each other by changing the electric signal back to the voice on the part of a recipient. Such a means of long distance conversations was invented by A.G. Bell in 1870.en_US
dc.language.isoenen_US
dc.publisherUnited Nations Industrial Development Organizationen_US
dc.subjectTelephone Assemblingen_US
dc.subjectTelephoneen_US
dc.titleTelephone Assembling Planten_US
dc.typeProject Profilesen_US
Appears in Collections:United Nations Industrial Development Organization

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