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Computer
Computer, machine that performs tasks, such as calculations or electronic communication, under the control of a set of instructions called a program. Programs usually reside within the computer and are retrieved and processed by the computer’s electronics. The program results are stored or routed to output devices, such as video display monitors or printers. Computers perform a wide variety of activities reliably, accurately, and quickly.
Dale E. Boyer/Photo Researchers, Inc.
Cray Supercomputer
The Cray-2 Supercomputer (designed by Seymour Cray of Cray Research,
Eagan, MN) was first introduced in 1985, nine years after the first
model, the Cray-1, was introduced. This type of supercomputer is used
for mathematical studies of very complex problems, such as speech
analysis, weather forecasting, and fundamental questions in physics
and chemistry.
THE BETTMANN ARCHIVE
Babbage's Difference Engine
Considered by many to be a direct forerunner of the modern computer,
the Difference Engine was able to compute mathematical tables. This
woodcut shows a small portion of the ingenious machine, which was
designed by Charles Babbage in the 1820s. Although the device did not
have a memory, Babbage’s later idea for the Analytical Engine would
have been a true, programmable computer if the technology of his time
had been able to build it.
Photo Researchers, Inc.
Computer-Aided Design and Manufacturing
Wind pressure on an automobile is simulated by Computer-Aided Design
(CAD) and Computer-Aided Manufacturing (CAM) software. Red (on the
nose of the automobile) indicates high pressures while blue indicates
low pressures.
Science Source/Photo Researchers, Inc.
CM-5 Supercomputer
The Connection Machine CM-5 supercomputer is a massively parallel
processing computer capable of many billions of floating point
operations per second. The computer contains hundreds of processing
units, similar to the central processing units (CPUs) in personal
computers. The processing units are linked together in parallel so
that multiple computations can be carried out simultaneously.
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General Knowledge :: Computer
