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21 Wi-Fi
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22 wifi
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23 Wi-Fi
Wi-Fi /waɪˈfaɪ/abbr. -
24 wi-fi
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25 Wi-Fi
[ʼwaɪfaɪ] n -
26 Wi-Fi
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27 WiFi
English-German dictionary of Electrical Engineering and Electronics > WiFi
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28 WiFi5
English-German dictionary of Electrical Engineering and Electronics > WiFi5
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29 wifi
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30 Wi-Fi
= WiFi; = Wi Fi(Wireless Fidelity (досл. "беспроводная преданность")) стандарт Wi-Fi на беспроводную связь, сертификат Wi-Fiсемейство стандартов IEEE 802.11b и IEEE 802.11g, а также логотип, выдаваемый после сертификации оборудования ассоциацией WECA и гарантирующий совместимость (интероперабельность) беспроводных РС-карт LAN, устройств и точек ( узлов) доступа различных производителей. Использует частоту 2,4 МГц, скорость передачи от 11 Мбит/с (802.11b) до 54 Mbps (802.11g).Many handheld devices today are shipped with built-in Wi-Fi capabilities — Многие современные портативные (карманные) устройства поставляются с встроенными средствами беспроводной связи
Англо-русский толковый словарь терминов и сокращений по ВТ, Интернету и программированию. > Wi-Fi
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31 Wi-Fi
[ˌwaɪ'faɪ]сущ.; информ.; сокр. от Wireless Fidelityвай-фай, беспроводной доступ (в интернет; по названию торговой марки) -
32 WIDE
сокр. от Widely Integrated Distributed Environment Wi-Fi Wireless Fidelity -
33 Armstrong, Edwin Howard
[br]b. 18 December 1890 New York City, New York, USAd. 31 January 1954 New York City, New York, USA[br]American engineer who invented the regenerative and superheterodyne amplifiers and frequency modulation, all major contributions to radio communication and broadcasting.[br]Interested from childhood in anything mechanical, as a teenager Armstrong constructed a variety of wireless equipment in the attic of his parents' home, including spark-gap transmitters and receivers with iron-filing "coherer" detectors capable of producing weak Morse-code signals. In 1912, while still a student of engineering at Columbia University, he applied positive, i.e. regenerative, feedback to a Lee De Forest triode amplifier to just below the point of oscillation and obtained a gain of some 1,000 times, giving a receiver sensitivity very much greater than hitherto possible. Furthermore, by allowing the circuit to go into full oscillation he found he could generate stable continuous-waves, making possible the first reliable CW radio transmitter. Sadly, his claim to priority with this invention, for which he filed US patents in 1913, the year he graduated from Columbia, led to many years of litigation with De Forest, to whom the US Supreme Court finally, but unjustly, awarded the patent in 1934. The engineering world clearly did not agree with this decision, for the Institution of Radio Engineers did not revoke its previous award of a gold medal and he subsequently received the highest US scientific award, the Franklin Medal, for this discovery.During the First World War, after some time as an instructor at Columbia University, he joined the US Signal Corps laboratories in Paris, where in 1918 he invented the superheterodyne, a major contribution to radio-receiver design and for which he filed a patent in 1920. The principle of this circuit, which underlies virtually all modern radio, TV and radar reception, is that by using a local oscillator to convert, or "heterodyne", a wanted signal to a lower, fixed, "intermediate" frequency it is possible to obtain high amplification and selectivity without the need to "track" the tuning of numerous variable circuits.Returning to Columbia after the war and eventually becoming Professor of Electrical Engineering, he made a fortune from the sale of his patent rights and used part of his wealth to fund his own research into further problems in radio communication, particularly that of receiver noise. In 1933 he filed four patents covering the use of wide-band frequency modulation (FM) to achieve low-noise, high-fidelity sound broadcasting, but unable to interest RCA he eventually built a complete broadcast transmitter at his own expense in 1939 to prove the advantages of his system. Unfortunately, there followed another long battle to protect and exploit his patents, and exhausted and virtually ruined he took his own life in 1954, just as the use of FM became an established technique.[br]Principal Honours and DistinctionsInstitution of Radio Engineers Medal of Honour 1917. Franklin Medal 1937. IERE Edison Medal 1942. American Medal for Merit 1947.Bibliography1922, "Some recent developments in regenerative circuits", Proceedings of the Institute of Radio Engineers 10:244.1924, "The superheterodyne. Its origin, developments and some recent improvements", Proceedings of the Institute of Radio Engineers 12:549.1936, "A method of reducing disturbances in radio signalling by a system of frequency modulation", Proceedings of the Institute of Radio Engineers 24:689.Further ReadingL.Lessing, 1956, Man of High-Fidelity: Edwin Howard Armstrong, pbk 1969 (the only definitive biography).W.R.Maclaurin and R.J.Harman, 1949, Invention \& Innovation in the Radio Industry.J.R.Whitehead, 1950, Super-regenerative Receivers.A.N.Goldsmith, 1948, Frequency Modulation (for the background to the development of frequency modulation, in the form of a large collection of papers and an extensive bibliog raphy).KFBiographical history of technology > Armstrong, Edwin Howard
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34 equipment
1) оборудование; аппаратура2) оснащение3) устройство•- active equipment
- airborne-electrooptical equipment
- amplifying equipment
- amplitude-modulation equipment
- analog-facsimile equipment
- audio equipment
- audio-visual equipment
- automatic-answerback equipment
- automatic-switching equipment
- auxiliary audio equipment
- backup equipment
- built-in equipment
- cable-input equipment
- calling equipment
- channel-dividing equipment
- channel-multiplexing equipment
- ciphony equipment
- command-data equipment
- communication security equipment
- COMSEC equipment
- conference communication equipment
- container-point communication equipment
- control-signaling equipment
- cross equipment
- customer-premises equipment
- data-circuit terminating equipment
- data-communication equipment
- data-compression equipment
- data-processing equipment
- data-terminal equipment
- data-transcription equipment
- data-transmission equipment
- dialing equipment
- dial-switching equipment
- digital-facsimile equipment
- digital-intercontinental conversion equipment
- domestic radioelectronic equipment
- duplex telegraph exchange equipment
- duplex universal trunking equipment
- emergency automation equipment
- explosion-proof equipment
- facsimile-telegraph equipment
- field equipment
- FIP equipment
- floor equipment
- grandfathered-terminal equipment
- ground communication equipment
- hoister-to-cage communication equipment
- hydroacoustical equipment
- image pick-up equipment
- inductive communication equipment
- industrial RF-equipment
- information technology equipment
- in-plant equipment
- input/output equipment
- input-and-monitoring equipment
- interface equipment
- intermediate conversion equipment
- ISDN-compatible equipment
- letter-printing fidelity increasing equipment
- limited-protection voice equipment
- line path equipment
- loudspeaking fireproof communication equipment
- magnetic-drum receiving equipment
- marine radiocommunication equipment
- medical electric equipment
- medical RF-equipment
- mine's exchange equipment
- movable HF-communication equipment
- network termination equipment
- new-customer premises equipment
- nonstationary equipment
- operative communication equipment
- photofacsimile equipment
- portable equipment
- protection equipment
- radioelectronic aircraft equipment
- radioelectronic satellite equipment
- radiopoint equipment
- radiotelegraph equipment
- railway-crossing communication equipment
- remote announcement equipment
- remote control equipment
- repeating equipment
- scientific RF-equipment
- security equipment
- selective communication equipment
- selective digital call equipment
- service equipment
- service-channel equipment
- signal-equalizing equipment
- signal-generating equipment
- signal-processing equipment
- sound transmission equipment
- spark-safe digital communication equipment
- stand-alone radiotelephone system equipment
- standard channel derivation equipment
- start-stop synchronous equipment
- station equipment
- studio equipment
- submarine communication equipment
- subscriber equipment
- switching equipment
- telecine equipment
- telecontrol equipment
- telegraph equipment equipment
- telemechanic equipment
- telemonitoring equipment
- terminal equipment
- testing-measuring equipment
- thirty-channel digital equipment
- through-group equipment
- through-supergroup equipment
- tone-telegraphing equipment
- transmission equipment
- TRI-TAC equipment
- trunking equipment
- USB-communication marine equipment
- USB-communication water transport equipment
- VHF radiotelephone two-way equipment
- video equipment
- wire diving communication equipment
- wireless diving communication equipmentEnglish-Russian dictionary of telecommunications and their abbreviations > equipment
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См. также в других словарях:
Wireless Fidelity — Wi Fi Logo Die Wi Fi Alliance ist eine 1999 ursprünglich unter dem Namen WECA (Wireless Ethernet Compatibility Alliance) gegründete, über 300 Unternehmen umfassende Organisation, die Produkte verschiedener Hersteller auf der Basis des IEEE 802.11 … Deutsch Wikipedia
Wireless-Fidelity — Wi Fi Le logo Wi Fi Pile de protocoles 7 • … Wikipédia en Français
Wireless fidelity — Wi Fi Le logo Wi Fi Pile de protocoles 7 • … Wikipédia en Français
wireless fidelity — noun a local area network that uses high frequency radio signals to transmit and receive data over distances of a few hundred feet; uses ethernet protocol • Syn: ↑wireless local area network, ↑WLAN, ↑WiFi • Hypernyms: ↑local area network, ↑LAN … Useful english dictionary
Fidelity — is a notion that at its most abstract level implies a truthful connection to a source or sources. Its original meaning dealt with loyalty and attentiveness to one s duty to a lord or a king, in a broader sense than the related concept of fealty … Wikipedia
Wireless Ethernet Compatibility Alliance — Wi Fi Logo Die Wi Fi Alliance ist eine 1999 ursprünglich unter dem Namen WECA (Wireless Ethernet Compatibility Alliance) gegründete, über 300 Unternehmen umfassende Organisation, die Produkte verschiedener Hersteller auf der Basis des IEEE 802.11 … Deutsch Wikipedia
Wireless Revolution — ▪ 2003 by Fiona Harvey In Helsinki, Fin., gamblers are getting their national lottery tickets by mobile telephone. In Hull, Eng., drivers are paying for their parking spaces with their mobile phones. In Tokyo people are using their phones… … Universalium
wireless local area network — noun a local area network that uses high frequency radio signals to transmit and receive data over distances of a few hundred feet; uses ethernet protocol • Syn: ↑WLAN, ↑wireless fidelity, ↑WiFi • Hypernyms: ↑local area network, ↑LAN … Useful english dictionary
Low fidelity — Lo fi redirects here. For the music genre, see Lo fi music : Lo fidelity redirects here. For the record label, see Lo Fidelity Records Low fidelity or lo fi describes a sound recording which contains technical flaws such as distortion, hum, or… … Wikipedia
WIFI — Wireless Fidelity (Computing » Networking) * Wireless Fidelity (IEEE 802.11) (Computing » Telecom) … Abbreviations dictionary
WI-FI — Wireless Fidelity (IEEE 802.11) (Computing » Networking) … Abbreviations dictionary