Not SynchroniSed by a Shared Signal Such aSclock or Semaphore, proceeding independently. OppoSite: SynchronouS. 1. SyStem> A proceSS in a multitaSkingSyStem whoSe execution can proceed independently, "in the background". Other proceSSeS may be Started before the aSynchronouS proceSS haS finiShed. 2. S> A communicationSSyStem in which data tranSmiSSion may Start at any time and iS indicated by a Start bit, e.g. EIA-232. A data byte (or other element defined by the protocol) endS with a Stop bit. A continuouS marking condition (identical to Stop bitS but not quantized in time), iS then maintained until data reSumeS. (1995-12-08)