master clock


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master clock

[′mas·tər ′kläk]
(computer science)
The electronic or electric source of standard timing signals, often called clock pulses, required for sequencing the operation of a computer. Also known as main clock; master synchronizer; master timer.

master clock

A clock that provides the primary source of internal timing for a processor or stand-alone control unit.
References in periodicals archive ?
However, the master clock in the brains of the night shift workers had only shifted by approximately two hours.
"With Dante becoming ubiquitous in fixed and mobile facilities of all sizes and types, we saw the need for a cost-effective, purpose-designed, dedicated master clock," Gordon Kapes, president of Studio Technologies,
Warren Walls, the USNAVOBSY Time Services division chief states, "The Master Clock at the Naval Observatory is the synchronizing heartbeat behind every DoD system and solution enabling interoperability and coordination, without which, the loss of missions, lives, and assets would quickly escalate.
And with RedNet, you don't need additional cabling and complexity to sync to a master clock: the system takes care of that automatically as rock steady clocking between units is carried over Ethernet with JetPLL for ultra-low-jitter.
Similar clocks run in all cells in the body and are set, like slave clocks, by the master clock in the brain.
Chemical clocks are running in every cell in the body and are set by the master clock in the brain.
In the brain, a master clock controls the release of melatonin, a hormone that prepares the body for sleep.
"The second concerns the optical fibre connector that brings the external GPS signal to the OPERA master clock, which may not have been functioning correctly when the measurements were taken," said CERN.
The body functions to rhythms marked by two tiers of clocks: a master clock that responds to external cues such as light and darkness to regulate 24-hour cycles; and smaller, individual clocks located in tissues and organs.
Our daily sleep cycles, behaviour and metabolism are governed by a powerful master clock. Disruption of this circadian rhythms is shown to be linked with insomnia, depression, heart disease, cancer and neurodegenerative disorders.
Along with his serious comments, Judge Curran noted some of the challenges Judge Fox faced in Gardner District Court, including, power outages, the building being filled with the smell of sewage, an infestation of mice and the master clock breaking down and shutting down all other clocks in the building.

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