Пособие рассчитано на учащихся средних школ, лицеев, гимназий, колледжей и студентов высших учебных заведе­ний всех, кто интересуется английским языком и увлека­ется компьютером. Удк 811. 111(07) ббк81. 2Англ-9 icon

Пособие рассчитано на учащихся средних школ, лицеев, гимназий, колледжей и студентов высших учебных заведе­ний всех, кто интересуется английским языком и увлека­ется компьютером. Удк 811. 111(07) ббк81. 2Англ-9


1 чел. помогло.
Смотрите также:
Учебное пособие для студентов вузов и учащихся общеобразовательных школ...
Программа для учащихся 10-11 классов общеобразовательной школы и студентов средних...
Учебное пособие Екатеринбург 2004 удк 2 (075) ббк э372-3я7...
Положение о проведении IX республиканского «Дня здоровья учащихся» Цели и задачи...
Пособие предназначено для студентов и учащихся юри­дических и транспортных высших и средних...
Психолого-педагогических...
Учебная программа для учащихся старших классов общеобразовательных школ...
-
Творческие работы на Конкурс могут представлять учащиеся старших классов средних...
Программа элективного курса ««Лингвострановедение и лингвокультуроведение Великобритании»» 7-9...
Творческие работы на Конкурс могут представлять учащиеся старших классов средних...
Учебное пособие предназначено для изучающих экономическую теорию студентов высших учебных...



Загрузка...
страницы: 1   2   3   4   5   6   7   8   9   ...   13
вернуться в начало
* * #

1. In 1960's advances in microelectronic components led to
the development of the minicomputer, followed more recently
by an even smaller microcomputer. Both have filled a need for
small but relatively flexible processing systems able to execute
comparatively simple computing functions at lower costs.

In 1971 Intel Corporation delivered the first microproces­sor, the 4004. All the logic to implement the central processing unit of a tiny computer was put onto a single silicon chip less than 1/4 inch square. That design was soon followed by many others. The progress toward smaller computers is continuing, designers are working at nano-computers and pico-computers.

When the central processing unit of a computer is imple­mented in a single, or very small number of integrated circuits, we call it a microprocessor. When a computer includes a mi­croprocessor as its major component, such device is called a microcomputer.

Today the hardware in data-processing machines is built out of microelectronic devices. Advances in microelectronic devices give rise to advances in data-processing machinery.

2. The computer has made it possible to mechanize much
of the information interchange and processing that constitute
the nervous system of our society.

The versatility and convenience of the microprocessor has changed the entire architecture of modern computer systems. No longer is the processing of information carried out only in the computer's central processing unit. Today there is a trend toward distributing more processing capability throughout a computer system, with various areas having small local proces­sors for handling operations in those areas.

There are a number of advantages of distributed processing. First, .since many elements of the computer can be working on different portions of the same task, the work may be done fast­er. Second, if one element in the network malfunctions, its workload can be shifted to another element or shared among several elements, so that the entire work is relatively immune

109 Unit 8. Central Processing Unit

to failure. Third, the network can be small enough to be con­tained within a single laboratory or building, or it can be spread out over a wide area.

TESTS

1. Вставьте необходимые слова вместо пропусков.

1. Programs and data to be processed must be in the

memory.

,a) internal; b) external; c) secondary

2. The control unit instructions from the program.

a) sends; b) changes; c) obtains

3. The results of arithmetic operations are returned to the
for transferring to main storage.

a) decoder; b) counter; c) accumulator

4. The instruction to be in control unit is read out

from primary storage into the storage register.

a) calculated;Jb) executed; c) read out

5. The performs logical comparisons of the contents

of the storage register and the .

a) adder; b) accumulator; c) comparer

6. The read out command is passed from the regis­
ter to the register.

a) instruction; b) address; c) storage

7. CPU is designed to and to basic instruc­
tions for the computer.

/a) control; b) consist; c) carry ouU

8. CU and ALU consist of electronic circuits with millions
of .

a) sensors; b) servers; c) switches

2. Согласуйте слова левой колонки с их интерпретацией,
предложенной справа.

  1. CPU f/- -a) performs the processing operations;

  2. CU ^ -b) carries out logical comparisons of stor-

age;

  1. ALU С -с) executes basic arithmetic functions;

  2. accumulator; d) coordinates the operation of the whole

system;

Английский язык. Основы компьютерной грамотности 110

  1. clock ( 'e) selects data from memory;

  2. counter *0 produces electronic marks at regular inter-

vals;

7. register ( > g) controls the flow between the primary stor-

age and the arithmetic-logical unit

8. decoder/ h) keeps the instruction while it is being per-

formed;

^9. comparer i) holds the results of processing operations; 10. adder .j) breaks the instructions into separate com­mands.

3. Выполните перевод следующего текста письменно по вариантам.

^ MICROPROCESSOR - A BRAIN ТО THE HARDWARE

1. The microprocessor forms the heart of a microcomputer.
The first microprocessors were developed in 1971 as a branch
of pocket calculator development. Since then there has been a
tremendous raise of work in this field and there appeared doz­
ens of different microprocessors. Microprocessors are used pri­
marily to replace or increase random logic design.

As it is known computer actually refers to a computing sys­tem including hardware (processor, I/O circuits, power supplies, control panel, etc.) and software (instruction manual, user's manual, assembler and diagnostic and service routines). Proces­sor refers to the processing circuits: control processing unit, memory, interrupt unit, clock and timing. Most processors also include computer software.

Central processing unit — heart of the processor — consists of the register array, arithmetic and logical unit, control unit (in­cluding microROM), and bus control circuits. Microsoftware may also include microinstruction manual, microassembler, etc.

2. The very first microprocessors were fabricated using
PMOS technology. "Holes" in the p-type material having a low
mobility, those microprocessors were relatively slow devices.
Later, improved technology permitted microprocessors to be
constructed using n-type MOS and these microprocessors are
almost as fast as normal minicomputers.

Ш Unit 8. Central Processing Unit

Some microprocessors are now made using CMOS. The speed and logic density of CMOS are inferior to n-type MOS but the process does have some significant advantages. First of all, it has a low power consumption, power being consumed only when a logic element changes a state. Secondly, it can operate over a wide voltage range. As a result, electronics based on CMOS can operate successfully with "noisy5* power supplies* The low consumption makes it quite possible to use a simple battery to maintain the security of supply for several weeks. This type of microprocessor has clear advantages over the other types.

Notes

MOS (metal-oxide-semiconductor) — структура металл-оксид-полупроводник, МОП-структура

PMOS (p-channel metal-oxide-semiconductor) — р-МОП-структура;

CMOS (complementary metal-oxide-semiconductor) — комплементарная МОП-структура (КМОП)





Unit 9 ^ INPUT-OUTPUT UNITS

1. Ознакомьтесь с терминами текста 1.

environment [m'vaisramsnt] — среда; окружение; режим работы;

external environment — внешняя среда

human-related ['hju:msn n'leitid] — (взаимо)связанный с

человеком human-independent — независимый от человека

remote terminal [n'mout Чэ:ттэ1] — удаленный терми­нал reel of magnetic tape — бобина с магнитной лентой

input-output interface — интерфейс (сопряжение, место стыковки) ввода-вывода

scan ['sksen] — просматривать; сканировать; разверты­вать

scanner ['sksena] — сканер; устройство оптического счи­тывания

bar-code scanner / bar-code reader — устройство считы­вания штрих-кода

regardless of [n'gardbs sv] — несмотря на; независимо от

to match characteristics ['mastfkasrskta'ristiks] — сопостав­лять параметры

similarly ['simibli] — подобным образом; также; анало­гично

to fall between — падать; попадать в интервал между

card reader — устройство считывания платы (карты)

line printer — построчный принтер; принтер печатания строки

page printer — принтер с постраничной печатью character printer — принтер с посимвольной печатью optical character reader — оптическое считывающее уст­ройство текста

113 Unit 9. Input-Ouput Units

optical mark reader — оптическое считывающее устрой­ство знаков

visual display ['vizjual dis'plei]— визуальный индикатор

digitizer [did3i'taizs] — аналого-цифровой преобразова­тель; сканер

keyboard input device — клавишное устройство ввода plotter ['рЫэ] — графопостроитель

voice recognition and response unit — устройство распоз­навания голоса и реагирования

2. Прочтите текст и скажите, какие устройства относятся к сфере ввода-вывода информации.

Text 1. ^ INPUT-OUTPUT ENVIRONMENT

Data and instructions must enter the data processing system, and information must leave it. These operations are performed by input and output (I/O) units that link the computer to its external environment.

The I/O environment may be human-related or human-in­dependent. A remote banking terminal is an example of a hu­man-related input environment, and a printer is an example of

Английский язык. Основы компьютерной грамотности 114

a device that produces output in a human-readable format. An example of a human-independent input environment is a de­vice that measures traffic flow. A reel of magnetic tape upon which the collected data are stored in binary format is an ex­ample of a human-independent output.

^ Input-Output Interfaces, Data enter input units in forms that depend upon the particular device used. For example, data are entered from a keyboard in a manner similar to typing, and this differs from the way that data are entered by a bar-code scan­ner. However, regardless of the forms in which they receive their inputs, all input devices must provide a computer with data that are transformed into the binary codes that the primary memo­ry of the computer is designed to accept. This transformation is accomplished by units called I/O interfaces. Input interfaces are designed to match the unique physical or electrical character­istics of input devices to the requirements of the computer sys­tem. Similarly, when output is available, output interfaces must be designed to reverse the process and to adapt the output to the external environment. These I/O interfaces are also called channels or input-output processors*(IOP).

The major differences between devices are the media that they use and the speed with which they are able to transfer data to or from primary storage.

^ Input-Output Device Speed. Input-output devices can be clas­sified as high-speed, medium-speed, and low-speed. The devic­es are grouped according to their speed. It should be noted that the high-speed devices are entirely electronic in their operation or magnetic media that can be moved at high speed. Those high­speed devices are both input and output devices and are used as secondary storage. The low-speed devices are those with com­plex mechanical motion or operate at the speed of a human operator. The medium-speed devices are those that fall be­tween — they tend to have mechanical moving parts which are more complex than the high-speed devices but not as complex as the low-speed.

^ High-speed devices: magnetic disk; magnetic tape.

Medium-speed devices: card readers; line printers; page print­ers; computer output microfilms; magnetic diskette; optical character readers; optical mark readers; visual displays.

US Unit 9. Input-Ouput Units

Low-speed devices: bar-code readers; character printers; dig­itizers; keyboard input devices; plotters; voice recognition and response units.

3. Дайте ответы на следующие вопросы.

1. What is the purpose of input and output devices? 2. What types of input-output devices do you know? 3. Why are data transformed into a binary code while entering the input device?

4. Give an example of a human independent output. 5. What is
an I/O interface? 6. What are the major differences between the
various I/O devices? 7. What types of I/O devices tend to be
high-speed devices? 8. What types of devices tend to be low-
speed devices?

4. Найдите в тексте английские эквиваленты следующих
словосочетаний:

Среда устройств ввода-вывода; система обработки ин­формации; внешняя среда; связан с человеком; независим от человека; удаленный банковский терминал; измерять поток данных; бобина с магнитной лентой; хранить со­бранную информацию; двоичный формат; интерфейс вво­да-вывода; вводить с клавиатуры; устройство считывания штрих-кода; не смотря на; преобразовать в двоичный код; сопоставлять параметры; подобным образом; интерфейс вывода; изменить процесс в обратном направлении; на­строить устройство ввода-вывода к внешней среде; глав­ное отличие; основная память; вторичная память; низко­скоростные устройства; в соответствии.

5. Вспомните значение новых слов и попытайтесь переве­
сти словосочетания, употребляемые с этими словами.

Environment: application environment; communication en­vironment; execution environment; external environment; hard­ware environment; interface invironment; management envi­ronment; multimedia environment; network environment; processing environment; security environment; software envi­ronment; user environment.

Interface: channel interface; common interface; data inter­face; database interface; display interface; external interface; flexible interface; floppy-disk interface; general-purpose inter­face; hardware interface; low-level interface.



Infinitive Active Passive
Indefinite to ask to be asked
Continuous to be asked
Perfect to have asked to have been asked
Perfect Continuous to have been asking




оставить комментарий
страница6/13
Дата18.09.2011
Размер2.59 Mb.
ТипДокументы, Образовательные материалы
Добавить документ в свой блог или на сайт

страницы: 1   2   3   4   5   6   7   8   9   ...   13
плохо
  1
отлично
  2
Ваша оценка:
Разместите кнопку на своём сайте или блоге:
rudocs.exdat.com

Загрузка...
База данных защищена авторским правом ©exdat 2000-2017
При копировании материала укажите ссылку
обратиться к администрации
Анализ
Справочники
Сценарии
Рефераты
Курсовые работы
Авторефераты
Программы
Методички
Документы
Понятия

опубликовать
Загрузка...
Документы

Рейтинг@Mail.ru
наверх