填空题 {{B}}PART ONE{{/B}} · Look at the statements below and the following Computer
Types. · Which type of computer (A, B, C or D) does each
statement (1-7) refer to? · For each statement (1-7), mark one
letter (A, B, C or D) on your Answer Sheet. · You will need to
use some of these letters more than once.
{{B}}A Microcomputer{{/B}} A microcomputer is a desktop or notebook
size computing device that uses a microprocessor as its Central Processing Unit,
or CPU. Microcomputers are also called Personal Computers (PCs), home computers,
small business computers, and micros. The smallest, most compact are called
laptops. When they first appeared, they were considered single user devices, and
they were capable of handling only four, eight, or 16 bits of information at one
time. More recently the distinction between microcomputers and large, mainframe
computers (as well as the smaller mainframe type systems called minicomputers)
has become blurred, as newer microcomputer models have increased the speed and
data handling capabilities of their CPUs into the 256 bit. or even much more bit
multi-user range. {{B}}B Minicomputer{{/B}} A minicomputer is a
mid-level computer built to perform complex computations while dealing
efficiently with a high level of input and output from users connected via
terminals Minicomputers also frequently connect to other minicomputers on a
network and distribute processing among all the attached machines. Minicomputers
are used heavily in transaction processing applications and as interfaces
between mainframe computer systems and wide area networks. {{B}}C
Mainframe Computer{{/B}} A mainframe computer is a high level computer
designed for the most intensive computational tasks. Mainframe computers are
often shared by multiple users connected to the computer via terminals. The most
powerful mainframes, called supercomputers, perform highly complex and time
consuming computations and are used heavily in both pure and applied research by
scientists, large businesses, and the military. {{B}}D
Supercomputer{{/B}} In computer science, supercomputers are large,
extremely fast, and expensive computers used for complex or sophisticated
calculations. Typically they are machines capable of pipelining instruction
execution and providing vector instructions. A supercomputer can, for example,
perform an enormous number of calculations required to draw and animate a moving
spaceship in a motion picture. Supercomputers are also used for weather
forecasting, large scale scientific modeling and oil exploration and so on and
so like.
填空题
They are often used for jobs like engineering design and testing, serious decryption, economic forecasting, etc.
填空题
Many public schools now employ the devices for programmed learning and computer literacy courses.
填空题
Computers are designed for use in homes, schools, and office settings.
填空题
They efficiently deal with a high level of input and output from different users.
填空题
They are used for jobs that take massive amounts of calculating
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They are usually used in transaction processing applications.
填空题
They are often shared by many users connected to the computer.