half duplex - определение. Что такое half duplex
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Что (кто) такое half duplex - определение

COMMUNICATION FLOWING IN BOTH DIRECTIONS SIMULTANEOUSLY
Half-duplex; Full-duplex; Time-division duplex; Frequency division duplex; Duplexing; Frequency duplex; Full duplex; Duplex communication; Half duplex; Duplex Communication; Duplex (Telecommunications); Duplex (communications); Duplex transmission; Full-duplexed; Duplex channel; Duplex telecommunications; Full Duplex; Two-way simultaneous; Time division duplex; Half Duplex; Frequency-Division Duplex; Frequency division duplexing; Half duplex communication; Frequency-division duplex; Duplex conversation; Half-duplex conversation; Full-duplex conversation; Half-duplex operation; Dual-simplex; Dual simplex; Transmit/receive transition gap; Receive/transmit transition gap; Semiduplex
  • A simple illustration of a full-duplex communication system. Full-duplex is not common in handheld radios as shown here due to the cost and complexity of common duplexing methods, but is used in [[telephone]]s, [[cellphone]]s and [[cordless phone]]s.
  • A simple illustration of a half-duplex communication system
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half-duplex         
<communications> (hdx, from telegraphy) 1. A type of communication channel using a single circuit which can carry data in either direction but not both directions at once. Compare: simplex, full-duplex. 2. An obsolete term for local echo. (2001-07-21)
half-duplex         
¦ adjective (of a communications system or computer circuit) allowing the transmission of signals in both directions but not simultaneously.
Duplex (telecommunications)         
A duplex communication system is a point-to-point system composed of two or more connected parties or devices that can communicate with one another in both directions. Duplex systems are employed in many communications networks, either to allow for simultaneous communication in both directions between two connected parties or to provide a reverse path for the monitoring and remote adjustment of equipment in the field.
full-duplex         
<communications> (fdx, from telegraphy) 1. A type of duplex communications channel which carries data in both directions at once. On purely digital connections, full-duplex communication requires two pairs of wires. On analog networks or in digital networks using carriers, it is achieved by dividing the bandwidth of the line into two frequencies, one for sending, and the other for receiving. 2. An obsolete term for remote echo. Compare simplex, half-duplex, double-duplex. (2001-07-21)
half-mast         
  • The [[Australian White Ensign]] flying at half-mast. In accordance with British [[tradition]], the flag is flying only one flag's width below the top of the pole.
  • Franklin Roosevelt]]
  • Capitol Building]] flies at half-staff in honor of President [[Ronald Reagan]], 2004
  • Brazilian flag]] flying at half-mast beside the [[Mercosul]] flag in front of the [[National Congress of Brazil]] in memory of the victims of the [[Chapecoense crash]] on 29 November 2016
  • Vietnam flag at half-mast in General Vo Nguyen Giap's funeral
  • Presidential Office Building]]
  • Hong Kong SAR flag flown at half mast
  • The flag of Saudi Arabia is never flown at half-mast.
  • train detrailment and explosion of Lac Mégantic, Québec]].
  • Thai national flag flown at half mast at [[Assumption College (Thailand)]] Bangkok during the mourning of the [[King Bhumibol]]
  • Elizabeth II]]'s death.
  • Joseph Shepard Building]] in [[Toronto]], following the death of [[Prince Philip, Duke of Edinburgh]], 2021
  • Black ribbons indicate mourning on banners that cannot be lowered to half-mast.
  • Flag at half-mast in [[Żebbuġ]], [[Malta]] for [[Good Friday]] 2014
  • Groningen]], Netherlands
  • Flags of Singapore outside [[The Fullerton Hotel Singapore]] were flown at half-mast to mark the death of [[Lee Kuan Yew]].
  • Chinese flag at half-mast to mark to mourn for the victims of the [[2008 Sichuan earthquake]]
  • Sir Edmund Hillary]]
  • Norwegian flag at half-staff to mourn the victims of the 2011 Norway attacks
  • Flag of Pahang]] is flown at half-mast at the [[Chin Swee Caves Temple]] as a mark of respect to the late Sultan [[Ahmad Shah of Pahang]]. The flag of Malaysia and Selangor are not at half-mast as a result of different mourning periods.
  • Philippine flag at half-staff at the Rizal Park.
  • Flag of Sweden at half-mast
  • Indian flag flown at half-mast at the Red Fort
  • Turkish flags]] at half mast after the [[2016 Atatürk Airport attack]]
  • The United States flag flying at half-staff in memorial of the [[September 11 attacks]] in New York City, Sep. 11 2014.
  • The [[Union Flag]] flying at half-mast, following the death of [[Prince Philip, Duke of Edinburgh]], 2021
  • flag of the Holy See]] flying at half-mast the day after the death of [[Pope John Paul II]]
  • Flags in Israel at half mast on the eve of [[Yom HaShoah]]
FLAG FLYING BELOW THE SUMMIT OF A SHIP MAST, A POLE ON LAND, OR A POLE ON A BUILDING
Half mast; Half staff; Half-Staff; Half-Mast; Halfmast; Half-staff; Proclamation 3044
If a flag is flying at half-mast, it is flying from the middle of the pole, not the top, to show respect and sorrow for someone who has just died.
PHRASE: usu PHR after v
half mast         
  • The [[Australian White Ensign]] flying at half-mast. In accordance with British [[tradition]], the flag is flying only one flag's width below the top of the pole.
  • Franklin Roosevelt]]
  • Capitol Building]] flies at half-staff in honor of President [[Ronald Reagan]], 2004
  • Brazilian flag]] flying at half-mast beside the [[Mercosul]] flag in front of the [[National Congress of Brazil]] in memory of the victims of the [[Chapecoense crash]] on 29 November 2016
  • Vietnam flag at half-mast in General Vo Nguyen Giap's funeral
  • Presidential Office Building]]
  • Hong Kong SAR flag flown at half mast
  • The flag of Saudi Arabia is never flown at half-mast.
  • train detrailment and explosion of Lac Mégantic, Québec]].
  • Thai national flag flown at half mast at [[Assumption College (Thailand)]] Bangkok during the mourning of the [[King Bhumibol]]
  • Elizabeth II]]'s death.
  • Joseph Shepard Building]] in [[Toronto]], following the death of [[Prince Philip, Duke of Edinburgh]], 2021
  • Black ribbons indicate mourning on banners that cannot be lowered to half-mast.
  • Flag at half-mast in [[Żebbuġ]], [[Malta]] for [[Good Friday]] 2014
  • Groningen]], Netherlands
  • Flags of Singapore outside [[The Fullerton Hotel Singapore]] were flown at half-mast to mark the death of [[Lee Kuan Yew]].
  • Chinese flag at half-mast to mark to mourn for the victims of the [[2008 Sichuan earthquake]]
  • Sir Edmund Hillary]]
  • Norwegian flag at half-staff to mourn the victims of the 2011 Norway attacks
  • Flag of Pahang]] is flown at half-mast at the [[Chin Swee Caves Temple]] as a mark of respect to the late Sultan [[Ahmad Shah of Pahang]]. The flag of Malaysia and Selangor are not at half-mast as a result of different mourning periods.
  • Philippine flag at half-staff at the Rizal Park.
  • Flag of Sweden at half-mast
  • Indian flag flown at half-mast at the Red Fort
  • Turkish flags]] at half mast after the [[2016 Atatürk Airport attack]]
  • The United States flag flying at half-staff in memorial of the [[September 11 attacks]] in New York City, Sep. 11 2014.
  • The [[Union Flag]] flying at half-mast, following the death of [[Prince Philip, Duke of Edinburgh]], 2021
  • flag of the Holy See]] flying at half-mast the day after the death of [[Pope John Paul II]]
  • Flags in Israel at half mast on the eve of [[Yom HaShoah]]
FLAG FLYING BELOW THE SUMMIT OF A SHIP MAST, A POLE ON LAND, OR A POLE ON A BUILDING
Half mast; Half staff; Half-Staff; Half-Mast; Halfmast; Half-staff; Proclamation 3044
¦ noun
1. a position of a flag halfway down its mast, as a mark of respect for a person who has died.
2. humorous a position lower than normal, especially for clothes.
Half-halt         
AN AID WITH THE OBJECT OF INCREASING THE ATTENTION AND BALANCE OF THE HORSE.
Half halt
The half-halt is a specific riding aid given by an equestrian to his horse, in which the driving aids and restraining aids are applied in quick succession. It is sometimes thought of as an "almost halt," asking the horse to prepare to halt in balance, before pushing it onward to continue in its gait.
half-mast         
  • The [[Australian White Ensign]] flying at half-mast. In accordance with British [[tradition]], the flag is flying only one flag's width below the top of the pole.
  • Franklin Roosevelt]]
  • Capitol Building]] flies at half-staff in honor of President [[Ronald Reagan]], 2004
  • Brazilian flag]] flying at half-mast beside the [[Mercosul]] flag in front of the [[National Congress of Brazil]] in memory of the victims of the [[Chapecoense crash]] on 29 November 2016
  • Vietnam flag at half-mast in General Vo Nguyen Giap's funeral
  • Presidential Office Building]]
  • Hong Kong SAR flag flown at half mast
  • The flag of Saudi Arabia is never flown at half-mast.
  • train detrailment and explosion of Lac Mégantic, Québec]].
  • Thai national flag flown at half mast at [[Assumption College (Thailand)]] Bangkok during the mourning of the [[King Bhumibol]]
  • Elizabeth II]]'s death.
  • Joseph Shepard Building]] in [[Toronto]], following the death of [[Prince Philip, Duke of Edinburgh]], 2021
  • Black ribbons indicate mourning on banners that cannot be lowered to half-mast.
  • Flag at half-mast in [[Żebbuġ]], [[Malta]] for [[Good Friday]] 2014
  • Groningen]], Netherlands
  • Flags of Singapore outside [[The Fullerton Hotel Singapore]] were flown at half-mast to mark the death of [[Lee Kuan Yew]].
  • Chinese flag at half-mast to mark to mourn for the victims of the [[2008 Sichuan earthquake]]
  • Sir Edmund Hillary]]
  • Norwegian flag at half-staff to mourn the victims of the 2011 Norway attacks
  • Flag of Pahang]] is flown at half-mast at the [[Chin Swee Caves Temple]] as a mark of respect to the late Sultan [[Ahmad Shah of Pahang]]. The flag of Malaysia and Selangor are not at half-mast as a result of different mourning periods.
  • Philippine flag at half-staff at the Rizal Park.
  • Flag of Sweden at half-mast
  • Indian flag flown at half-mast at the Red Fort
  • Turkish flags]] at half mast after the [[2016 Atatürk Airport attack]]
  • The United States flag flying at half-staff in memorial of the [[September 11 attacks]] in New York City, Sep. 11 2014.
  • The [[Union Flag]] flying at half-mast, following the death of [[Prince Philip, Duke of Edinburgh]], 2021
  • flag of the Holy See]] flying at half-mast the day after the death of [[Pope John Paul II]]
  • Flags in Israel at half mast on the eve of [[Yom HaShoah]]
FLAG FLYING BELOW THE SUMMIT OF A SHIP MAST, A POLE ON LAND, OR A POLE ON A BUILDING
Half mast; Half staff; Half-Staff; Half-Mast; Halfmast; Half-staff; Proclamation 3044
n. at half-mast (the flags were flying at half-mast)
Half-mast         
  • The [[Australian White Ensign]] flying at half-mast. In accordance with British [[tradition]], the flag is flying only one flag's width below the top of the pole.
  • Franklin Roosevelt]]
  • Capitol Building]] flies at half-staff in honor of President [[Ronald Reagan]], 2004
  • Brazilian flag]] flying at half-mast beside the [[Mercosul]] flag in front of the [[National Congress of Brazil]] in memory of the victims of the [[Chapecoense crash]] on 29 November 2016
  • Vietnam flag at half-mast in General Vo Nguyen Giap's funeral
  • Presidential Office Building]]
  • Hong Kong SAR flag flown at half mast
  • The flag of Saudi Arabia is never flown at half-mast.
  • train detrailment and explosion of Lac Mégantic, Québec]].
  • Thai national flag flown at half mast at [[Assumption College (Thailand)]] Bangkok during the mourning of the [[King Bhumibol]]
  • Elizabeth II]]'s death.
  • Joseph Shepard Building]] in [[Toronto]], following the death of [[Prince Philip, Duke of Edinburgh]], 2021
  • Black ribbons indicate mourning on banners that cannot be lowered to half-mast.
  • Flag at half-mast in [[Żebbuġ]], [[Malta]] for [[Good Friday]] 2014
  • Groningen]], Netherlands
  • Flags of Singapore outside [[The Fullerton Hotel Singapore]] were flown at half-mast to mark the death of [[Lee Kuan Yew]].
  • Chinese flag at half-mast to mark to mourn for the victims of the [[2008 Sichuan earthquake]]
  • Sir Edmund Hillary]]
  • Norwegian flag at half-staff to mourn the victims of the 2011 Norway attacks
  • Flag of Pahang]] is flown at half-mast at the [[Chin Swee Caves Temple]] as a mark of respect to the late Sultan [[Ahmad Shah of Pahang]]. The flag of Malaysia and Selangor are not at half-mast as a result of different mourning periods.
  • Philippine flag at half-staff at the Rizal Park.
  • Flag of Sweden at half-mast
  • Indian flag flown at half-mast at the Red Fort
  • Turkish flags]] at half mast after the [[2016 Atatürk Airport attack]]
  • The United States flag flying at half-staff in memorial of the [[September 11 attacks]] in New York City, Sep. 11 2014.
  • The [[Union Flag]] flying at half-mast, following the death of [[Prince Philip, Duke of Edinburgh]], 2021
  • flag of the Holy See]] flying at half-mast the day after the death of [[Pope John Paul II]]
  • Flags in Israel at half mast on the eve of [[Yom HaShoah]]
FLAG FLYING BELOW THE SUMMIT OF A SHIP MAST, A POLE ON LAND, OR A POLE ON A BUILDING
Half mast; Half staff; Half-Staff; Half-Mast; Halfmast; Half-staff; Proclamation 3044
·noun A point some distance below the top of a mast or staff; as, a flag a half-mast (a token of mourning, ·etc. ).
Half-mast         
  • The [[Australian White Ensign]] flying at half-mast. In accordance with British [[tradition]], the flag is flying only one flag's width below the top of the pole.
  • Franklin Roosevelt]]
  • Capitol Building]] flies at half-staff in honor of President [[Ronald Reagan]], 2004
  • Brazilian flag]] flying at half-mast beside the [[Mercosul]] flag in front of the [[National Congress of Brazil]] in memory of the victims of the [[Chapecoense crash]] on 29 November 2016
  • Vietnam flag at half-mast in General Vo Nguyen Giap's funeral
  • Presidential Office Building]]
  • Hong Kong SAR flag flown at half mast
  • The flag of Saudi Arabia is never flown at half-mast.
  • train detrailment and explosion of Lac Mégantic, Québec]].
  • Thai national flag flown at half mast at [[Assumption College (Thailand)]] Bangkok during the mourning of the [[King Bhumibol]]
  • Elizabeth II]]'s death.
  • Joseph Shepard Building]] in [[Toronto]], following the death of [[Prince Philip, Duke of Edinburgh]], 2021
  • Black ribbons indicate mourning on banners that cannot be lowered to half-mast.
  • Flag at half-mast in [[Żebbuġ]], [[Malta]] for [[Good Friday]] 2014
  • Groningen]], Netherlands
  • Flags of Singapore outside [[The Fullerton Hotel Singapore]] were flown at half-mast to mark the death of [[Lee Kuan Yew]].
  • Chinese flag at half-mast to mark to mourn for the victims of the [[2008 Sichuan earthquake]]
  • Sir Edmund Hillary]]
  • Norwegian flag at half-staff to mourn the victims of the 2011 Norway attacks
  • Flag of Pahang]] is flown at half-mast at the [[Chin Swee Caves Temple]] as a mark of respect to the late Sultan [[Ahmad Shah of Pahang]]. The flag of Malaysia and Selangor are not at half-mast as a result of different mourning periods.
  • Philippine flag at half-staff at the Rizal Park.
  • Flag of Sweden at half-mast
  • Indian flag flown at half-mast at the Red Fort
  • Turkish flags]] at half mast after the [[2016 Atatürk Airport attack]]
  • The United States flag flying at half-staff in memorial of the [[September 11 attacks]] in New York City, Sep. 11 2014.
  • The [[Union Flag]] flying at half-mast, following the death of [[Prince Philip, Duke of Edinburgh]], 2021
  • flag of the Holy See]] flying at half-mast the day after the death of [[Pope John Paul II]]
  • Flags in Israel at half mast on the eve of [[Yom HaShoah]]
FLAG FLYING BELOW THE SUMMIT OF A SHIP MAST, A POLE ON LAND, OR A POLE ON A BUILDING
Half mast; Half staff; Half-Staff; Half-Mast; Halfmast; Half-staff; Proclamation 3044
Half-mast (British, Canadian and Australian English) or half-staff (American English) refers to a flag flying below the summit of a ship mast, a pole on land, or a pole on a building. In many countries this is seen as a symbol of respect, mourning, distress, or, in some cases, a salute.

Википедия

Duplex (telecommunications)

A duplex communication system is a point-to-point system composed of two or more connected parties or devices that can communicate with one another in both directions. Duplex systems are employed in many communications networks, either to allow for simultaneous communication in both directions between two connected parties or to provide a reverse path for the monitoring and remote adjustment of equipment in the field. There are two types of duplex communication systems: full-duplex (FDX) and half-duplex (HDX).

In a full-duplex system, both parties can communicate with each other simultaneously. An example of a full-duplex device is plain old telephone service; the parties at both ends of a call can speak and be heard by the other party simultaneously. The earphone reproduces the speech of the remote party as the microphone transmits the speech of the local party. There is a two-way communication channel between them, or more strictly speaking, there are two communication channels between them.

In a half-duplex or semiduplex system, both parties can communicate with each other, but not simultaneously; the communication is one direction at a time. An example of a half-duplex device is a walkie-talkie, a two-way radio that has a push-to-talk button. When the local user wants to speak to the remote person, they push this button, which turns on the transmitter and turns off the receiver, preventing them from hearing the remote person while talking. To listen to the remote person, they release the button, which turns on the receiver and turns off the transmitter. This terminology is not completely standardized, and some sources define this mode as simplex.

Systems that do not need duplex capability may instead use simplex communication, in which one device transmits and the others can only listen. Examples are broadcast radio and television, garage door openers, baby monitors, wireless microphones, and surveillance cameras. In these devices, the communication is only in one direction.