heartbeat


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Related to heartbeat: Heartbleed

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 ?
Heartbeat offers a YouTube real time chat system; the ability to create chat rooms so people can share interests and videos; and provides an analytics tool that allows users to see key metrics on their YouTube channel as well as on other channels.
In research published in the journal Cerebral Cortex, a team of scientists led by the University of Cambridge and the Medical Research Council (MRC) Cognition and Brain Sciences Unit, Cambridge, studied not only whether volunteers could be trained to follow their heartbeat, but whether it was possible to identify from brain activity how good they were at estimating their performance.
Last week Heartbeat distributed 100,000 cardboard piggy banks to schools and companies partnered with the organization.
Caption: Kelly Clarkson's "Heartbeat Song" is set to her baby's prenatal heartbeat (Photo: Instagram)
By also recording the volunteers' heartbeat signals using electrodes, the timing of the heartbeat was used to trigger a bright flashing outline which was superimposed on the virtual body shown via the HMD.
The 34-year-old added: "So I don't know if my son's heartbeat got on the album but it is now in a zombie film, which is great.
We've been working very hard for a number of years to build a movement of people using creative arts for the conflict transformation in Israel and Palestine," Heartbeat founder Aaron Shneyer said in a telephone interview this week.
ConnectWise, developer of the leading service management software designed exclusively for IT service providers, VARS, ISVs and MSPs, announced today that Client Heartbeat has completed integration of its customer satisfaction monitoring tool with ConnectWise.
Take Irish Heartbeat giving up half a length against Mirza in a match bet as Rae Guest's gelding was well held off a career-high mark over the course and distance last time.
She is also goodwill ambassador for La Chaine de l'Espoir, the international organization Heartbeat is affiliated with.
PAUL HANAGAN expects Irish Heartbeat to run a big race in tomorrow's William Hill Lincoln Handicap at Doncaster.
Our findings reveal that when the mother is breathing in a rhythmical fashion, the foetus can sense the shift in the mother's heartbeat and adapts its own heartbeat accordingly.