PCs in a practice known as telecommunicating. PCs are also able to
interface with worldwide communication networks such as Internet
and www (world wide web) to find information on any subject.
3.
PCs consist of a microprocessor which directs logical and arithmetical
functions and runs computer programs. It also has electronic memory
to temporarily store programs and data, and mass storage devices such
as hard, floppy and compact discs (CD-ROM) devices – to
permanently store programs and data. Information and commands are
entered by the user via a keyboard or by a mouse. Information from the
PC is displayed on a video monitor on a liquid crystal display (LCD)
video screen, or it can be printed on laser or inkjet printers.
4.
In 1940s, early computers were the size of houses and were very
expensive. The invention of integrated circuits and microprocessors
enables computer makers to combine the essential elements of a
computer onto silicon computer chips. The first microprocessor the
Intel 4004, created by Intel Corporation was designed to be the
computing and logical processor of calculators and watches. From its
simple design modern microprocessor involved.
5.
The Altair 8800 is considered to be the 1
st
PC. It appeared on the cover
of Popular Electronics Magazine in 1975 and inspired many computer
enthusiasts to produce hardware and software.
6.
American computer designers Steven Jobs and Stephen Wozniak,
working in their garage, created Apple II in 1977, one of the 1
st
PCs to
incorporate a colour video display and a keyboard that made a
computer easy to use. In 1981 International Business Machine (IBM)
Corporation introduced the IBM PC, which became the PC standard.
The Apple Macintosh, developed in 1984, featured a graphical user
interface (GUI) – a visual appealing way to represent computer
commands and data on the screen. The Macintosh combines icons
(pictures that represent files and programs) with windows (boxes that
each contain an open file or program). Information on the screen was
controlled by a device known as a mouse. During the last 20 years,
computing power has doubled about every 18 months thanks to the
creation of faster microprocessors, development of new storage
technologies. These technological advances will make PCs more
powerful and useful.
Прочтите пояснения к тексту.
mainframe computer – универсальный компьютер
laptops – портативный компьютер, ноутбук
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