heartbeat

(redirected from Heartbeats)
Also found in: Dictionary, Thesaurus, Medical, Idioms, Wikipedia.

heartbeat

[′härt‚bēt]
(physiology)
Pulsation of the heart coincident with ventricular systole.

heartbeat

(networking)
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.

heartbeat

(2)
A periodic synchronisation signal used by software or hardware, such as a bus clock or a periodic interrupt.

heartbeat

(3)
The "natural" oscillation frequency of a computer's clock crystal, before frequency division down to the machine's clock rate.

heartbeat

(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.

heartbeat

(1) A periodic signal generated by hardware for activation and/or synchronization purposes. See MHz.

(2) A periodic signal generated by hardware or software to indicate that it is still running.
References in periodicals archive ?
Playing on this fact, this game show (keenly hosted by Colgatesmiled Vernon Kay) sees players forced to battle against their own heartbeats to win cash.
The study, conducted by Jane Aspell of Anglia Ruskin University in the UK and Lukas Heydrich of the Swiss Federal Institute of Technology in Lausanne, is novel in that it shows that information about the internal state of the body - in this case, the heartbeat - can be used to change how people experience their own body and self.
A rapid, unusually forceful heartbeat, which can be felt in your throat.
And if the heartbeats do not match when the mother breathes in rhythm, it could signal that something is wrong with the child and give doctors an early warning.
What to do: If you have irregular heartbeats, ask your doctor if you should take fish oil supplements.
18 /PRNewswire/ -- Hearing the baby's fetal heartbeat at the doctor's office is one of the most relieving and joyous moments for every expecting mother.
Herbal weight-loss drug Metabolife 356 can cause subtle changes in a person's heartbeat, the kind of alterations that sometimes lead to dangerous heart arrhythmias, researchers say.
One of the most common abnormal heartbeats is ventricular fibrillation, and that is inconsistent with life,'' Rebel said.
In paroxysmal tachycardia, repeated periods of very fast heartbeats begin and end suddenly.
Washington, August 15 ( ANI ): A new research has said that a visual projection of human heartbeats can be used to generate an 'out-of-body experience.
Nerve growth run amok may explain why, after surviving a heart attack, some people begin to suffer from irregular heartbeats and may die suddenly when their heart stops beating.
In the study of 683 people who had experienced irregular heartbeats, most of the life-threatening irregular beats, known as arrhythmias, occurred on Mondays - even if the person did not work anymore.