Computer in Use. Маркушевская Л.П - 18 стр.

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Университет ИТМО | Санкт-Петербург

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18
readers, card punchers, tape drives, and disk drives. Memory is especially important
since mainframes are used in data-intensive tasks such as financial operations.
Originally, the only way to communicate with a computer was through punched
cards, and thus mainframes still support reading and punching cards. As a result,
mainframes are often used to provide processing power after a problem has been set
up with the aid of a micro- or minicomputer. Moreover, mainframes are used to link
together distributed smaller processors through-out an enterprise. And minicomputers
can be tied directly into mainframes so users can access their large database.
Supercomputers take advantage of the most recent advances in electronic
circuits, processing techniques, and memory organization to reach computing speeds
many times that of mainframes. Complex problems in CAD/CAM that were not even
considered several years ago can now be solved economically. Applications of
supercomputers include modelling and simulation tasks such as solid modelling,
kinematics, analysis, and fluid-flow simulations. Another major application is a
finite-element analysis. Here, a supercomputer will perform the task three to ten
times faster than a mainframe. Supercomputers work so much faster because of data
pipelining, high-speed circuits, and large internal memories. In pipelining, data
elements are streamed through the processor in blocks instead of being handled one-
at-a-time as in conventional computers.
COMPREHENSION CHECK
Exercise 1. Choose the right answer.
1. What is a program?
a) A set of instructions
b) A collection of components
c) A hardware component
2. What are applications?
a) Operation systems
b) Programs for specific tasks
c) Collections of components
3. When are mainframes used today?
a) When it is necessary to use only printers
b) In applications requiring substantial data processing and large
memory capacity.
c) When it is necessary to support a peripheral device.
4. Why can we conform that memory in mainframe is especially important?
a) It is because minicomputers can be tied directly into mainframes.
b) It is because it supports reading and punching cards.
c) It is because mainframes are used in data-intensive tasks such as
financial operations.
Exercise 2. Arrange the sentences from the text " New Agent, New Help" in their
logical order.

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