-
1 портовая проводная связь
Russian-English dictionary of telecommunications > портовая проводная связь
-
2 портовая проводная связь
Telecommunications: wire port communicationУниверсальный русско-английский словарь > портовая проводная связь
-
3 Fessenden, Reginald Aubrey
[br]b. 6 October 1866 East Bolton, Quebec, Canadad. 22 July 1932 Bermuda[br]Canadian radio pioneer who made the first known broadcast of speech and music.[br]After initial education at Trinity College School, Port Hope, Ontario, Fessenden studied at Bishops University, Lennoxville, Quebec. When he graduated in 1885, he became Principal of the Whitney Institute in Bermuda, but he left the following year to go to New York in pursuit of his scientific interests. There he met Edison and eventually became Chief Chemist at the latter's Laboratory in Orange, New Jersey. In 1890 he moved to the Westinghouse Electric and Manufacturing Company, and two years later he returned to an academic career as Professor of Electrical Engineering, initially at Purdue University, Lafayette, Indiana, and then at the Western University of Pennsylvania, where he worked on wireless communication. From 1900 to 1902 he carried out experiments in wireless telegraphy at the US Weather Bureau, filing several patents relating to wire and liquid thermal detectors, or barretters. Following this he set up the National Electric Signalling Company; under his direction, Alexanderson and other engineers at the General Electric Company developed a high-frequency alternator that enabled him to build the first radiotelephony transmitter at Brant Rock, Massachusetts. This made its initial broadcast of speech and music on 24 December 1906, received by ship's wireless operators several hundred miles away. Soon after this the transmitter was successfully used for two-way wireless telegraphy communication with Scotland. Following this landmark event, Fessenden produced numerous inventions, including a radio compass, an acoustic depth-finder and several submarine signalling devices, a turboelectric drive for battleships and, notably, in 1912 the heterodyne principle used in radio receivers to convert signals to a lower (intermediate) frequency.[br]Principal Honours and DistinctionsInstitute of Electrical and Electronics Engineers Medal of Honour 1921.BibliographyUS patents relating to barretters include nos. 706,740, 706,742 and 706,744 (wire, 1902) and 731,029 (liquid, 1903). His invention of the heterodyne was filed as US patent no. 1,050,441 (1913).Further ReadingHelen M.Fessenden, 1940, Fessenden. Builder of Tomorrow. E.Hawkes, 1927, Pioneers of Wireless, London: Methuen. O.E.Dunlop, 1944, Radio's 100 Men of Science.KFBiographical history of technology > Fessenden, Reginald Aubrey
См. также в других словарях:
1-Wire — An iButton in a plastic fob, as used for Istanbul Akbil smart ticket 1 Wire is a device communications bus system designed by Dallas Semiconductor Corp. that provides low speed data, signaling, and power over a single signal.[1] 1 Wire is similar … Wikipedia
Serial port — A male DE 9 connector used for a serial port on a IBM PC compatible computer. (Pinout) … Wikipedia
The Greek (The Wire) — Infobox character name = The Greek media = The Wire real name = age = 70s portrayer = Bill Raymond creator = David Simon species = gender = Male first = Ebb Tide (episode 2.01) last = ndash;30 ndash; (episode 5.10) cause = End of series… … Wikipedia
Power line communication — or power line carrier (PLC), also known as power line digital subscriber line (PDSL), mains communication, power line telecom (PLT), power line networking (PLN), or broadband over power lines (BPL) are systems for carrying data on a conductor… … Wikipedia
Parallel communication — In telecommunication and computer science, parallel communication is a method of sending several data signals simultaneously over a communication link (comprising of several wired channels in parallel) at one time. It contrasts with serial… … Wikipedia
Near field communication — An NFC enabled mobile phone interacting with a SmartPoster Near field communication, or NFC, allows for simplified transactions, data exchange, and wireless connections between two devices in proximity to each other, usually by no more than a few … Wikipedia
Serial communication — In telecommunication and computer science, serial communication is the process of sending data one bit at one time, sequentially, over a communication channel or computer bus. This is in contrast to parallel communication, where several bits are… … Wikipedia
IEEE 1284 — For a history of the Centronics interface, see Centronics. IEEE 1284 is a standard that defines bi directional parallel communications between computers and other devices. An IEEE 1284 36 pin male Centronics printer cable connection. Contents … Wikipedia
Com21 — Inc. Former type Public (NASDAQ: CMTO) Industry Computer networking … Wikipedia
USB — This article is about the computer bus to connect peripherals. For other uses of USB, see USB (disambiguation). Universal Serial Bus Original logo Type Computer Hardware Bus … Wikipedia
RS-232 — This article is about the RS 232 standard. For RS 232 variants, see serial port. A 25 pin connector as described in the RS 232 standard In telecommunications, RS 232 (Recommended Standard 232) is the traditional name for a series of standards for … Wikipedia
