A superhighway for channeling data.A superhighway for channeling data
Transmitting vast quantities of data over a conventional cable link from a high-speed computer to another computer or to a display terminal is like trying to funnel traffic on a superhighway across a one-lane bridge. Inevitably, a traffic jam results, considerably slowing the transfer of data. To circumvent this bottleneck A lessening of throughput. It often refers to networks that are overloaded, which is caused by the inability of the hardware and transmission lines to support the traffic. It can also refer to a mismatch inside the computer where slower-speed peripheral buses and devices prevent the CPU , researchers are now developing a new, computer-to-computer link capable of carrying as many as 1,600 million bits of data per second.
The new "high-speed channel" was originally developed by Don Tolmie and his colleagues at the Los Alamos Los Alamos (lôs ăl`əmōs', lŏs), uninc. town (1990 pop. 11,455), seat of Los Alamos co., N central N.Mex. It is on a long mesa extending from the Jemez Mts. The U.S. (N.M.) National Laboratory. "We wanted to look at data in a movie fashion," says Tolmie, "and to do that you need very high data rates." For example, a single picture consisting of a 1,000-by-1,000 array of points, or pixels, with each point represented by 8 bits of color not of the white race; - commonly meaning, esp. in the United States, of negro blood, pure or mixed.
See also: Color information would by itself take up 8 million bits. To create a movie running at a rate of 30 pictures per second requires a flow of at least 240 million bits per second.
"Computers that can generate data at these speeds are just now becoming available," says Tolmie. And a few manufacturers are already putting custom-built communications channels Also called a "circuit" or "line," it is a pathway over which data are transferred between remote devices. It may refer to the entire physical medium, such as a telephone line, optical fiber, coaxial cable or twisted wire pair, or, it may refer to one of several carrier frequencies into their computers to handle high data rates. But what's needed, he says, is a standard link that allows any two computers to be connected -- in the same way that just about any personal computer can now be tied to any printer using a standard cable. The Los Alamos invention, with some modifications, is likely to be adopted as a computer industry standard by the end of this year.
The Los Alamos channel is essentially a package of wires and integrated-circuit chips that distribute and control the flow of electrical pulses. The new design allows more electronic traffic to travel along wider, shorter routes than in previously built communications links. A cable carries this information to another computer or a terminal capable of receiving the data. Eventually, that information may travel along glass fibers instead of copper wires, permitting the linking of computers over longer distances.
"We'll soon be able to tie together all kinds of high-speed computers and computer terminals," says Tolmie. "It helps both the manufacturers and the users." A variety of manufacturers, many of whom are involved in developing the standard, have already indicated an interest in using the new channel.
"It's very important for us to see such a standard," says Newt Perdue Perdue may refer to:
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San Jose (sănəzā`, săn hōzā`), city (1990 pop. 782,248), seat of Santa Clara co., W central Calif.; founded 1777, inc. 1850. , Calif. That company is developing a high-speed network for linking fast computers. "That lets our company concentrate on performance," he says, instead of having to worry about how to link up with all the different kinds of computers available.
Initially, high-speed channels and networks using the channels will be most in demand for scientific and engineering applications at places such as the national laboratories, NASA NASA: see National Aeronautics and Space Administration.
in full National Aeronautics and Space Administration
Independent U.S. and automotive and oil companies, says Perdue. There's also a growing market in the health sciences because of the need to process large volumes of data from X-ray machines Noun 1. X-ray machine - an apparatus that provides a source of X rays
apparatus, setup - equipment designed to serve a specific function
fluoroscope, roentgenoscope - an X-ray machine that combines an X-ray source and a fluorescent screen to enable direct and other imaging devices.