Crossword clues for semaphore
semaphore
- Signals from coast include electronic chart
- Signalling system delivered by horse trained to carry chart to Europe
- Army signalling?
- This flags up important messages
- Signaling device
- Visual signaling apparatus
- Signal flag
- Make visual signals — a posher me (anag)
- Distant communication system
- Army communication?
- Flagging conversation?
- Communication means at sea
- An apparatus for visual signaling with lights or mechanically moving arms
- Make visual signals - a posher me
- Electronic chart conveyed in coastland signal
- Old flag signalling system
- Old communications system
- What about plan received by sensitive signalling system?
- Waving flags found in prop containing English chart
- Spray with greater frequency pressing rumpled suit
Longman Dictionary of Contemporary English
The Collaborative International Dictionary
Semaphore \Sem"a*phore\, n. [Gr. sh^ma a sign + fe`rein to bear: cf. F. s['e]maphore.] A signal telegraph; an apparatus for giving signals by the disposition of lanterns, flags, oscillating arms, etc.
Douglas Harper's Etymology Dictionary
Wiktionary
n. 1 Any visual signaling system with flags, lights, or mechanically moving arms. 2 A visual system for transmitting information by means of two flags that are held one in each hand, using an alphabetic and numeric code based on the position of the signaler’s arms. 3 (context computing English) A bit, token, fragment of code, or some other mechanism which is used to restrict access to a shared function or device to a single process at a time, or to synchronize and coordinate events in different processes. vb. (context transitive intransitive English) To signal using (or as if using) a semaphore.
WordNet
n. an apparatus for visual signaling with lights or mechanically moving arms
v. send signals by or as if by semaphore
convey by semaphore, of information
Wikipedia
Semaphore usually refers to flag semaphore. It may also refer to;
Optical-telegraph systems:- Semaphore line, a system of long-distance communication based on towers with moving arms
- Railway semaphore signals for railway traffic control
- Traffic semaphore, another name for automotive traffic lights based on their early resemblance to railway semaphores
- Turning semaphore or trafficators, retractable arms to indicate turns on automobiles from the 1920s to 1950s
- Semaphore (programming), in computer science, a mechanism for supporting mutual exclusion in concurrent programs
- Semaphore, South Australia, a historic seaside suburb of Adelaide
- Semaphore railway line, Adelaide, a closed railway line in South Australia
- Semaphore (album), a 1998 album by Fridge
- Semaphore (song), the 2004 7" single by the New Zealand post-rock band Jakob
- Semaphore, fictional professor in Cubitus comic strips or Wowser cartoons
In computer science, a semaphore is a variable or abstract data type that is used for controlling access, by multiple processes, to a common resource in a concurrent system such as a multiprogramming operating system.
A trivial semaphore is a plain variable that is changed (for example, incremented or decremented, or toggled) depending on programmer-defined conditions. The variable is then used as a condition to control access to some system resource.
A useful way to think of a semaphore as used in the real-world systems is as a record of how many units of a particular resource are available, coupled with operations to safely (i.e. to prevent race conditions) adjust that record as units are required or become free, and, if necessary, wait until a unit of the resource becomes available. Semaphores are a useful tool in the prevention of race conditions; however, their use is by no means a guarantee that a program is free from these problems. Semaphores which allow an arbitrary resource count are called counting semaphores, while semaphores which are restricted to the values 0 and 1 (or locked/unlocked, unavailable/available) are called binary semaphores.
The semaphore concept was invented by Dutch computer scientist Edsger Dijkstra in 1962 or 1963, and has found widespread use in a variety of operating systems. It has also been used as the control mechanism for I/O controllers, for example in the Electrologica X8 computer.
Semaphore is the second studio album by Fridge, released on 16 March 1998.
Usage examples of "semaphore".
Boundy might have pondered long on the pugilistic attitude of the semaphore but for an event that, while he was most intent upon it, aimed a sudden thrust at his bump and his theory all at the same time.
She was no longer in the cave, but out on the scrub slopes of the bajada, a great-aunt of a saguaro rearing tall above her, signaling some slow semaphore to her relatives on a distant slope.
The Larry instructed me to tell Doctor Cummings and you too if possible, that I, formerly Tula, have changed my name to Tuly because I am no longer a slave or a copycat or a semaphore or a relay.
Signaling between skyships of this lost republic was accomplished by use of an elaborate semaphore array of lights and colored pannels which could be alternately hidden and revealed.
Semaphoring his credit card, Meadowbrook made a big thing of catching the tab.
His long arms, encased in NPS green, semaphored information and enthusiasm.
Laszlo to the last of the five hundred faces she had been flashing him since he woke up, and the surreptitious semaphoring of her hands signaling him to the front, the front of what?
He was wearing red shorts because he'd bicycled here, a five-mile ride, not because he wanted to semaphore his instant availability to the world at large.
Directly ahead of him rose a semaphore, placed at a point where evidently a derailing switch branched from the line.
Looking towards the north, he could distinguish Gibraltar faintly visible in the extreme distance, and upon the summit of the rock both Ben Zoof and himself fancied they could make out another semaphore, giving signals, no doubt, in response to the one here.
On the Tump, the old castle mound across the river, the big tower, one end of the Grand Trunk that wound more than two thousand miles across the continent to Genua, glittered with semaphore.
Before the semaphore, news from Genua took months to get here, now it takes less than a day.
If an antenna was beyond quick repair they signaled the problem through the hull, using a hydromechanical semaphore with a keyboard for unusually complex problems.
In addition to the semaphore towers, every town—and most of the villages—in range of our remotes contains at least one Church complex.
His fingers moved on the semaphore controls, directing the riggers to unpin the antennas.