heartbeat

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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 ?
However, one heart disorder that the common man is unaware about, is arrhythmia, which refers to abnormal heart beats (slow or fast) that has various causes including coronary artery disease.
Digital cardiogram system (MBO, Digimad 16 made in England) was used in order to determine heart beat in rest situation.
While these patients who are on multiple treatments for fits and seizures keep going to their neurologists, they are unaware that their epilepsy is linked to irregular heart beats.
If your doctor recommends that you wear a device to monitor your heart beat, ask about a continuous loop recorder.
Did you know it is easier to hear your heart beat on the left side of your chest?
If you develop a skin rash with or without a fever, fast heart beat, or low blood pressure, immediately stop taking thalidomide and contact your doctor.
Most people have felt their heart beat very fast, experienced a fluttering in their chest, or noticed that their heart skipped a beat.
We are equally as passionate about charity, with US$50 from each watch sold in our Double Heart Beat Collection donated to various charities.
For patients pursuing fertility preservation services prior to cancer treatment, Ferring Pharmaceuticals and Walgreens Specialty Pharmacy have developed the Heart Beat program to help ease some of the financial burden.
These stimuli makes the heart beat faster, 100 to 180 beats per minute creating in greater work load for the heart.
Addressing the occasion, Ms Sangita Reddy, Operations, Executive Director, Apollo Hospitals, said, "The campaign aims at making people aware about small lifestyle changes which can do wonders to make their heart beat a healthy tune.
ISLAMABAD, April 05, 2011 (Balochistan Times): People who suffer from irregular heart beat can prevent this situation if they do yoga exercise on regular basis.