News tagged with computer
Motion quotient: IQ predicted by ability to filter motion (w/ video)
A brief visual task can predict IQ, according to a new study. This surprisingly simple exercise measures the brain's unconscious ability to filter out visual movement. The study shows that individuals whose ...
Psychology & Psychiatry
9 hours ago |
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Researchers develop sperm-sorting design that may aid couples undergoing in vitro fertilization
(Medical Xpress)—According to the World Health Organization, approximately 70 million couples experience infertility worldwide. Current data suggests that nearly one third of infertility disorders are due ...
Medical research
13 hours ago |
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Neurons that can multitask greatly enhance the brain's computational power, study finds
Over the past few decades, neuroscientists have made much progress in mapping the brain by deciphering the functions of individual neurons that perform very specific tasks, such as recognizing the location ...
Neuroscience
May 20, 2013 |
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Baby's life saved with groundbreaking 3-D printed device that restored his breathing
Every day, their baby stopped breathing, his collapsed bronchus blocking the crucial flow of air to his lungs. April and Bryan Gionfriddo watched helplessly, just praying that somehow the dire predictions ...
Medical research
May 22, 2013 |
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Eyes on the sun: Child sunshine exposure and eye development
(Medical Xpress)—Exposure to sunshine as a small child is crucial to the development of a healthy eye according to results of long-term myopia study conducted by University of Sydney researchers.
Ophthalmology
May 21, 2013 |
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Computer model predicts when viruses become infectious
A new computer model could help scientists predict when a particular strain of avian influenza might become infectious from bird to human, according to a report to be published in the International Journal Data Mining an ...
Diseases, Conditions, Syndromes
May 20, 2013 |
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The artificial pancreas that keeps tabs on sugar
(Medical Xpress)—Development of a sophisticated artificial pancreas holds potential to transform the lives of patients with Type 1 diabetes.
Diabetes
May 16, 2013 |
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Neuroscientists use statistical model to draft fantasy teams of neurons
This past weekend teams from the National Football League used statistics like height, weight and speed to draft the best college players, and in a few weeks, armchair enthusiasts will use similar measures ...
Neuroscience
Apr 29, 2013 |
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Theta brainwaves reflect ability to beat built-in bias
Vertebrates are predisposed to act to gain rewards, and to lay low to avoid punishment. Try to teach chickens to back away from food in order to obtain it, and you'll fail, as researchers did in 1986. But ...
Neuroscience
May 07, 2013 |
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Imaging technique could help traumatic brain injury patients: Mapping technology used to predict long-term effects
(Medical Xpress)—A new application of an existing medical imaging technology could help predict long-term damage in patients with traumatic brain injury, according to a recent UC San Francisco study.
Neuroscience
May 09, 2013 |
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Team develops mathematical model to measure hidden HIV
(Medical Xpress)—Scientists have long believed that measuring the amount of HIV in a person's blood is an indicator of whether the virus is actively reproducing. A University of Delaware-led research team ...
HIV & AIDS
May 08, 2013 |
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Stents disrupt blood flow
(Medical Xpress)—A researcher at ETH Zurich is designing a realistic artery model with an implanted stent and is using a computer to simulate the blood flow through the stent. In doing so he is uncovering ...
Cardiology
May 06, 2013 |
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Tick-borne Lone Star virus identified through new super-fast gene sequencing
The tick-borne Lone Star virus has been conclusively identified as part of a family of other tick-borne viruses called bunyaviruses, which often cause fever, respiratory problems and bleeding, according to ...
Diseases, Conditions, Syndromes
May 02, 2013 |
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Computer algorithms help find cancer connections
Powerful data-sifting algorithms developed by computer scientists at Brown University are helping to untangle the profoundly complex genetics of cancer. In a study reported today in the New England Journal of Medicine, resear ...
Cancer
May 01, 2013 |
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A text message a day keeps the asthma attack away
(Medical Xpress)—Simply sending children with asthma a text message each day asking about their symptoms and providing knowledge about their condition can lead to improved health outcomes. In a study by ...
Diseases, Conditions, Syndromes
Apr 30, 2013 |
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Computer
A computer is a machine that manipulates data according to a set of instructions.
Although mechanical examples of computers have existed through much of recorded human history, the first electronic computers were developed in the mid-20th century (1940–1945). These were the size of a large room, consuming as much power as several hundred modern personal computers (PCs). Modern computers based on integrated circuits are millions to billions of times more capable than the early machines, and occupy a fraction of the space. Simple computers are small enough to fit into a wristwatch, and can be powered by a watch battery. Personal computers in their various forms are icons of the Information Age and are what most people think of as "computers". The embedded computers found in many devices from MP3 players to fighter aircraft and from toys to industrial robots are however the most numerous.
The ability to store and execute lists of instructions called programs makes computers extremely versatile, distinguishing them from calculators. The Church–Turing thesis is a mathematical statement of this versatility: any computer with a certain minimum capability is, in principle, capable of performing the same tasks that any other computer can perform. Therefore computers ranging from a mobile phone to a supercomputer are all able to perform the same computational tasks, given enough time and storage capacity.
For more information about Computer, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
