clock

(redirected from Instructions per second)
Also found in: Dictionary, Thesaurus, Financial, Acronyms, Encyclopedia, Wikipedia.

clock

(klŏk)
n.
1. An instrument other than a watch for measuring or indicating time, especially a mechanical or electronic device having a numbered dial and moving hands or a digital display.
2. A biological clock.
v. clocked, clocking, clocks
v.tr.
To register or record with a mechanical device: clocked the winds at 60 miles per hour.

clock′er n.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

CLOCK

A gene on chromosome 4q12 that encodes a ubiquitously expressed human homolog of the mouse clock gene, which forms a heterodimer with ARNTL and activates E-box element transcription of several circadian clock proteins (e.g., PER1 and PER2). CLOCK is highly expressed in the suprachiasmatic nucleus.

Molecular pathology
CLOCK-ARNTL double mutations in the PAS domains result in syngernistic desensitisation to high levels of CRY on repression of CLOCK-ARNTL transcriptional activity of PER1, disrupting circadian rhythmicity.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

clock

(klok)
A device for measuring time.

biological clock

1. An internal system in organisms that influences behavior in a rhythmic manner. Functions such as growth, feeding, secretion of hormones, the rate of drug action, the wake-sleep cycle, the menstrual cycle, and reproduction coincide with certain external events such as day and night, the tides, and the seasons. Biological clocks appear to be set by environmental conditions in some animals, but if these animals are isolated from their environment they continue to function according to the usual rhythm. A gradual change in environment does produce a gradual change in the timing of the biological clock. See: circadian; maladaptation to night work; zeitgeber
2. A colloquial term for the decrease in fertility that accompanies aging, particularly as women approach the age of 35.
Medical Dictionary, © 2009 Farlex and Partners

Patient discussion about clock

Q. How do you wake up in the morning if your narcolepsy is so severe you can't hear the alarm clock, phone ring? biggest problem is sleep paralysis, can't wake up. Late for work, everything, life is suffering because of severity. Have tried ritalin, natural supplements, hypnosis therapy, Provigal, antidepressants, nothing seems to work. Employer thinks it's an excuse, friends are irritated, I'm at my wits end. Life is spent sleeping more than awake.

A. Narcolepsy cannot yet be cured. But EDS and cataplexy, the most disabling symptoms of the disorder, can be controlled in most patients with drug treatment. Often the treatment regimen is modified as symptoms change. For decades, doctors have used central nervous system stimulants-amphetamines such as methylphenidate, dextroamphetamine, methamphetamine, and pemoline-to alleviate EDS and reduce the incidence of sleep attacks. For most patients these medications are generally quite effective at reducing daytime drowsiness and improving levels of alertness. However, they are associated with a wide array of undesirable side effects so their use must be carefully monitored. Common side effects include irritability and nervousness, shakiness, disturbances in heart rhythm, stomach upset, nighttime sleep disruption, and anorexia. For full article: http://www.ninds.nih.gov/disorders/narcolepsy/detail_narcolepsy.htm#120393201 Hope this helps.

More discussions about clock
This content is provided by iMedix and is subject to iMedix Terms. The Questions and Answers are not endorsed or recommended and are made available by patients, not doctors.
References in periodicals archive ?
The cost of processing one MIPS (a million instructions per second) has dropped steadily since 1981.
For example, the 1,000 processors can execute 115 billion instructions per second while dissipating only 0.7 Watts, low enough to be powered by a single AA battery.
It includes up to 96 of the world's fastest, most powerful microprocessors, capable of executing more than 50 billion instructions per second.
SCAMPs are software-programmable vision chips that integrate an image sensor and processor array capable of performing more than one billion (a.k.a., giga) instructions per second. To their surprise, the chips weren't able to meet the operating requirements outlined: "It certainly is quick, but no where quick enough that I feel comfortable using it for full autonomous applications," Figueiredo says.
The work being done by Macro 4 partner CPTGlobal is intended to identify and then implement possible savings where performance, measured in MIPS (millions of instructions per second), can be improved in the run up to Christmas with the aim of preventing the need for Tesco to buy in additional mainframe resources during the busy period.
* The ability to process 40 million instructions per second.
The single-chip SH7775 32-bit processor, running at speeds up to 600 MHz, achieves performance of 1 GIPS (giga instructions per second) and up to 4.2 GFLOPS (giga floating-point operations per second).
The CC2510 MCU is a low-power single-cycle 8051 providing up to 26 MIPS (million instructions per second).
Then, the RAMAC could do 30 instructions per second. Today, they measure computer power in millions of instructions per second.
With eight parallel rendering pipelines, industry leading 256-bit memory interface and 128MB of double data rate (DDR) memory, the RADEON 9800 PRO Mac Edition is capable of executing up to 8.4 billion instructions per second and delivering an astounding 21 GB/sec memory bandwidth.
MIPS (millions of instructions per second) sales, an indicator of how much mainframe capacity customers have bought, were down 4% for the quarter.
As with previous Scenix modem reference designs, the new V.23 modem replaces external hardware components with Virtual Peripheral software modules that are loaded into the on-chip flash/EEPROM program memory of a 50 MIPS (million instructions per second) Scenix SX28AC microcontroller.

Full browser ?