Компьютерная техника. Еремина Н.В. - 9 стр.

2 Unit II
    2.1 Text 1
    2.1.1 Read and translate the following text

COMPUTER SYSTEM

     In order to use computers effectively to solve problems in
environment, computer systems are devised. A “system” implies a good
mixture of integrated parts working together to form a useful whole. Computer
systems may be discussed in two parts.
         The 1-st part is hardware – the physical, electronic and electro-
    mechanical devices that are thought of and recognized as “computers”.
         The 2-nd part is software – the programs that control and coordinate
    the activities of the computer hardware and that direct the processing of
    data.

               INPUT                COMPUTER                    OUTPUT



                             SECONDARY
                             STORAGE

       Fig.2        - Hardware components of a basic computer system

     Fig.2 shows diagrammatically the basic components of computer
hardware joined together in a computer system. The term “computer” usual
refers to those parts of the hardware in which calculations and other data
manipu1ations are performed, and to the internal memory in which data and
instructions are stored during the actual execution of programs.
     The various peripherals, which include input and/or output devices, various
secondary memory devices, and so on, are attached to the CPU. Computer
software can be divided into two very broard categories – systems software and
application software. The former is often simply referred to as “systems”. These,
when brought into internal memory, direct the computer to perform tanks. The latter
may be provided along with the hardware by a systems supplier as part of a computer
product designed to answer a specific need in certain areas. These complete
hardware/software products are called turnkey systems.

    2.2 Exercises

    2.2.1 Which statement best expresses the main idea of the text