Heartbeat

имя существительное 1) биение, пульсация сердца 2) душевное волнение, возбуждение, беспокойство Синоним(ы): emotion 3) мгновение, миг Например: In another heartbeat the whole valley was afloat. — Через мгновение вся долина была залита водой.

Большой англо-русский словарь

Heartbeat

noun 1. one complete pulsation of the heart 2. the vital center or driving impulse 3. a brief space of time; flash — used chiefly in the phrase in a heartbeat

Merriam-Webster's Collegiate Dictionary

Heartbeat

1. The signal emitted by a Level 2 Ethernet transceiver at the end of every packet to show that the collision-detection circuit is still connected. 2. A periodic synchronisation signal used by software or hardware, such as a bus clock or a periodic interrupt. 3. The "natural" oscillation frequency of a computer's clock crystal, before frequency division down to the machine's clock rate. 4. A signal emitted at regular intervals by software to demonstrate that it is still alive. Sometimes hardware is designed to reboot the machine if it stops hearing a heartbeat. See also breath-of-life packet, watchdog.

Free Online Dictionary of Computing