Text 2. PROGRAMMING LANGUAGES - раздел Иностранные языки, Английский язык. Основы компьютерной грамотности Let's Assume That We Have Studied The Problem, Designed A \
L...
Let's assume that we have studied the problem, designed a \
logical plan (our flowchart or pseudocode), and are now ready \
to write the program instructions. The process of writing pro- j
gram instructions is called coding. The instructions will be writ- .
ten on a form called a coding form.^The instructions we write ■
will be recorded in a machine-readable form using a keypunch, ;
key-to-tape, or key-to-disk, or entered directly into computer ; memory through a terminal keyboard.
The computer cannot understand instructions written in just ■ v
any old way. The instructions must be written according to a set !
of rules. These rules are the foundation of a programming Ian- j
guage. A programming language must convey the logical steps ■*
of the program plan in such a way that the control unit of the \
CPU can interpret and follow the instructions. Programming j
languages have improved throughout the years, just as comput- I.
er hardware has improved. They have progressed from machine- \
151_______________________ Unit 11. Computer Programming
oriented languages that use strings of binary Is and 0s to problem-oriented languages that use common mathematical and/or English terms.
There are over 200 problem-oriented languages. The most common of them are COBOL, FORTRAN, PL/I, RPG, BASIC, PASCAL.
COBOL
COBOL was the most widely used business-oriented programming language. Its name is an acronym for Common Јlisi-ncss-Oriented Zanguage. COBOL was designed to solve problems that are oriented toward data handling and input-output operations. Of course, COBOL can perform arithmetic operations as well, but its greatest flexibility is in data handling. COBOL also was designed as a self-documenting language. Self-documenting languages are those that do not require a great deal of explanation in order to be understood by someone reading the program instructions. The self-documenting aspect of COBOL is made possible by its sentencelike structure and the very generous maximum symbolic field-name length of 30 characters. With a field-name length of up to 30 characters, the name can clearly identify the field and its purpose.
ДК ББК Англ КТК Р... Научный консультант Соколов С В доктор технических наук профессор действительный член Академии образования и Ака демии Военных наук...
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Text 2. PROGRAMMING LANGUAGES
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Ознакомьтесь с терминами текста 1.
computer literacy [ksm'pjute 'litsrasi] — компьютерная
грамотность problem-solving device — устройство, обеспечивающее
решение задачи
be aware of [bi a'wesr ov] — понимат
Ознакомьтесь с терминами текста 2
intricate ['mtnkit] — сложный, запутанный, electronic circuit [sbkt'romk 'sa:kit] — электронная цепь, схема
to operate switches [ops'reit 'switfiz] — приводить в действие переключатели
Text 2. WHAT IS A COMPUTER?
A computer is a machine with an intricate network of electronic circuits that operate switches or magnetize tiny metal cores. The switches, like the cores, are capable of being in one or two possi
Ознакомьтесь с терминами текста 1
calculating device [ksllcjiK'leitin di'vais] — вычислительное
устройство
multiple ['nultiplj — кратный
abacus ['aebakss] — счеты
slide rule ['slaid 'nil] — логар
Text У. THE FIRST CALCULATING DEVICES
Let us take a look at the history of computers that we know today. The very first calculating device used was the ten fingers of a man's hands. This, in fact, is why today we still count in tens an
Подберите вместо пропусковподходящее по смыслу слово.
1. British scientists invented a___ way of multiplying and
dividing.
a) mechanical; b) electrical; c) optical
2. A new branch of mathematics,____ , was invented in
Types of computers
The two basic types of computers are analog and digital. Analog computers simulate physical systems. They operate on the basis of an analogy to the process that is being studied. For ex-
STEPS IN THE DEVELOPING OF COMPUTERS
1. In 1948 due to the invention of transistors there appeared the possibility to replace vacuum tubes. The transistor occupied an important place on the way to computer development. The
Ознакомьтесь с терминами текста 2.
medium (pi. media) — носитель; среда capacity — емкость; объем (памяти); пропускная способность
media capacity — емкость носителя
data access time — время доступа к данным
Опишите схему.
93__________________________________ Unit 7. Storage
13. Переведите предложения, содержащие всевозможные формы причастий: Participle I, Participle II,
DIGITAL COMPUTER OPERATION
1. A digital computer is a machine capable of performing operations on data represented in digital or number form. The individual operations performed by a digital computer are very simple arithmet
TESTS 1. Вставьте вместо пропусков необходимые слова.
1. The time required for the computer to locate and transfer data in the storage device is called the data____ time.
a) sequence; b) access; c) value
2.______ memories have no
Text 2. THE CPU MAIN COMPONENTS
As it is known the two functional units of the CPU are the control unit (CU) and the arithmetic-logical unit (ALU). The control unit manages and coordinates the entire computer system. It obtains
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 trem
A MODEM
The piece of equipment that allows a computer to communicate with other computers over telephone lines is called a modem. The modem allows the individual to access information from all over the w
Вставьте необходимые слова вместо пропусков.
1. A personal computer is a small relatively inexpensive de-
vice designed for an individual__________ .
a) person; b) producer; c) user
2. One of the fi
Text 1. COMPUTER PROGRAMMING
Programming is the process of preparing a set of coded instructions which enables the computer to solve specific problems or to perform specific functions. Theiessence of computer programmingjis
FORTRAN IV
The FORTRAN IVlanguage is oriented toward solving problems of a mathematical nature. The name FORTRAN comes from the combination of the words formula translation. The versi
RPG II Programming language
RPG IIis a business-oriented language. The name stands for report program generator. RPG is considerably different from other programming languages. RPG is, in effect, a large prew
The conversion of symbolic languages
As we see, most of the symbolic languages are oriented toward the particular application areas of business or science (math). The one problem with all symbolic languages is that none of them can b
Running the computer program
The operating system is a collection of program provided by the computer's manufacturer that allows us to shedule jobs for the computer, to translate source programs into object programs, to sort d
A BRIEF HISTORY of the INTERNET
In 1973 the Defense Advanced Research Projects Agency (DARPA) initiated a research program to investigate techniques and technologies for interlinking packet networks of various kinds. The objectiv
ENJOY YOURSELF
Quiz-game "Do you know more about computers"?(Divide into two groups and give answers to even (1 gr.) and odd (2 gr.)
question numbers.)
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