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In synchronous communications, the stream of data to be transferred is encoded as fluctuating voltage levels in one wire (the 'DATA'), and a periodic pulse of voltage on a separate wire (called the "CLOCK" or "STROBE") which tells the receiver "the current DATA bit is 'valid' at this moment in time".
In physics, the no-communication theorem (also referred to as the no-signaling principle) is a no-go theorem in quantum information theory.It asserts that during the measurement of an entangled quantum state, it is impossible for one observer to transmit information to another observer, regardless of their spatial separation.
Asynchronous communication at the data link layer or higher protocol layers is known as statistical multiplexing, for example Asynchronous Transfer Mode (ATM). In this case, the asynchronously transferred blocks are called data packets, for example ATM cells.
Before signaling will work, the sender and receiver must agree on the signaling parameters: Full or half-duplex operationThe number of bits per character -- currently almost always 8-bit characters, but historically some transmitters have used a five-bit character code, six-bit character code, or a 7-bit ASCII.
The Revista Cubana de Física (Cuban Journal of Physics) is a biannual peer-reviewed open access scientific journal published by the Sociedad Cubana de Física (Cuban Physical Society) and the Physics Faculty (University of Havana) that was established in 1981.
Stephen Downes (born April 6, 1959) is a Canadian philosopher and commentator in the fields of online learning and new media.He has explored and promoted the educational use of computer and online technologies since 1995. [1]
Peter Zoller (born 16 September 1952) [1] is a theoretical physicist from Austria. He is professor at the University of Innsbruck [1] and works on quantum optics and quantum information and is best known for his pioneering research on quantum computing and quantum communication and for bridging quantum optics and solid state physics.
In computer science, asynchronous I/O (also non-sequential I/O) is a form of input/output processing that permits other processing to continue before the I/O operation has finished.