Computer in Use. Маркушевская Л.П - 17 стр.

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Университет ИТМО | Санкт-Петербург

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17
Verbs:
1 2
1. combine
2. require
3. support
4. solve
5. include
6. type
a) allow
b) involve
c) print
d) recognize
e) decide
f) link
g) demand
h) encourage
Scan-reading
A computer system
A computer system is a collection of components that work together to process
data. The purpose of a computer system is to make it as easy as possible for you to
use computer to solve problems. A functioning computer system combines hardware
elements with software elements. The hardware elements are the mechanical devices,
the system, the machinery and the electronics. The software elements are the
programs written for the system. Collectively these components provide a complete
computer system.
Usually, a computer system requires three basic hardware items: the central
processor unit, which performs all data processing, a terminal device, which helps
users to communicate with their computer system and a memory storing programs
and data. These three devices are the required hardware components of any computer
system. Computer system includes many other devices: a printer, a scanner and a
modem. These computer devices are called hardware.
A set of instructions telling a computer what to do is a program. Programs are
usually written in a Programming languages like Pascal, C++, etc. Applications are
programs for specific tasks. Applications include: database software, spreadsheets
calculations, word-processing on a word processor. To function hardware and
software, a computer needs an operation system program. Some operation systems
require users to type in commands to tell the computer what to do. Many computers
use a graphical interface or point-and-click interface such as Windows.
Some interfaces allow plug-and-play, the possibility of connecting new hardware of
the computer without having to adjust or configure the system to take the new
hardware into account: the interface program recognizes the hardware automatically.
Read the text and supply it with the suitable title.
Mainframes take their beginning from the original computer and are used
today in applications requiring substantial data processing and large memory capacity
These processors typically require room-size facilities. Mainframes support many
peripheral devices and can drive several at a time, including printers, terminals, card

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