asynchronous

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asynchronous

 [a-sing´kro-nus]
1. pertaining to asynchronism.
2. in cardiac pacing terminology, said of a pacemaker that cannot sense any spontaneous underlying cardiac electrical activity, so that pacing is done at a fixed, constant rate.

asynchronous

[āsing′krənəs]
Etymology: Gk, a + synchronos, not simultaneous
(of an event or device) a computer operation in one command performed in response to a signal that the previous command has been completed. One operation is completed before the next is initiated.

asynchronism

(ā″sing′krŏ-nizm) [ ¹an- + synchronism]
1. The failure of events to occur in time with each other as they usually do.
2. Incoordination.
asynchronous (-nŭs), adjective
References in periodicals archive ?
IBM bisync systems are now accessible to asynchronous ASCII terminals on the DCX network, thanks to a new option called Bluegate, which emulates an IBM 3271/3274 (model 2) cluster controller making asynchronous ASCII terminals look like IBM 3277/3278 (model 2) terminals.
Authorized terminals on the system can select the gateway and access the bisync environment.
Recently, the firm, which is a division of National Product Marketing, redesigned PC/Com to work with other popular printed-circuit boards that emulate 3270 terminals as well as SDLC and bisync terminal controllers, including boards from Forte and Quadram.
The Wellesley, Massachusetts firm's pcPATH and netPATH software operates in conjunction with a multi-function, dual-channel circuit card that plugs into a PC expansion slot to permit communications with SDLC or bisync protocols over leased and switched lines, the pcPATH products allow a variety of IBM-compatible personal computers to communicate with IBM hosts in SNA and bisync networking environments; the netPATH products permit 32 concurrent host communications sessions for all nodes on several popular LANs.
To overcome inherent delay problems, some users may be able to migrate their network to a protocol that is more immune to the effects of satellite delays than 3270 Bisync.
Total throughput can be increased by as much as 40 percent with the Bisync emulation feature due to bandwidth savings.
In addition, DPS6-DSA can co-exist with SNA and bisync for communications with IBM systems.
In async and bisync protocols, which are character-oriented, the line-handlers are always looking for recognizable control characters, usually seven or eight bits long.
Besides 3270 support, the TP 3010 can be used to interface bisync 2780/3780 and asynchronous terminals and hosts to the Telenet network.