a transmission data standard, where data information is sent at non-regular intervals. Information is sent as necessary, instead of synchronized with a time signal.

A standard for data transmission where each data package has a start and stop bit. See also synchronous mode.

A GFI input mode that typically provides a KB with asynchronous events that occur over the course of the KB's execution.

In this mode used with the Thoratec VAD, the VAD pumping rate is determined and fixed by the operator. The volume of blood pumped with each beat (called the stoke volume) may vary.

Not synchronous. A way to send transmissions by starting and stopping transmissions with a code rather than sending transmissions at specific time intervals as in synchronous mode. Asynchronous communication devices do not have to be synchronized with a clocking signal, which is required with synchronous transmission. Also frequently referred to as ATM or Asynchronous Transfer Mode. See also Synchronous Mode.