Data Processing and Data Processing systems

The necessary data are processed by a computer to become useftil information. In fact this is the definition of data process­ing. Data are a collection of facts — unorganized but able to be organized into useful information. Processing is a series of ac­tions or operations that convert inputs into outputs. When we speak of data processing, the input is data, and the output is useful information. So, we can define data processing as a se­ries of actions or operations that converts data into useful in­formation.

We use the term data processing system to include the resourc­es that are used to accomplish the processing of data. There are four types of resources: people, materials, facilities, and equip­ment. People provide input to computers, operate them, and use their output. Materials, such as boxes of paper and printer rib­bons, are consumed in great quantity. Facilities are required to house the computer equipment, people and materials.

The need for converting facts into useful information is not a phenomenon of modern life. Throughout history, and even prehistory, people have found it necessary to sort data into forms that were easier to understand. For example, the ancient Egyp­tians recorded the ebb and flow of the Nile River and used this information to predict yearly crop yields. Today computers con­vert data about land and water into recommendations to farm­ers on crop planting. Mechanical aids to computation were de­veloped and improved upon in Europe, Asia, and America throughout the seventeenth, eighteenth, and nineteenth centu­ries. Modern computers are marvels of an electronics technol­ogy that continues to produce smaller, cheaper, and more pow­erful components.

Basic data processing operations

Five basic operations are characteristic of all data process­ing systems: inputting, storing, processing, outputting, and con­trolling. They are defined as follows.

Inputting is the process of entering data, which are collected facts, into a data processing system. Storing is saving data or pibrmation so that they are available for initial or for additional processing. Processing represents performing arithmetic or log­ical operations on data in order to convert them into useful in­formation. Outputting is the process of producing useftil infor-mation, such as a printed report or visual display.

Controlling is directing the manner and sequence in which all of the above operations are performed.

Data storage hierarchy

It is known that data, once entered, are organized and stored in successively more comprehensive groupings. Generally, these groupings are called a data storage hierarchy. The general group­ings of any data storage hierarchy are as follows.

1) Characters, Which are all written language symbols: let­ ters, numbers, and special symbols. 2) Data elements, which are meaningful collections of related characters. Data elements are also called data items or fields. 3) Records, which are collections of related data elements. 4) Files, which are collections of re­lated records. A set of related files is called a data base or a data bank.

 

3 Answer the following questions:

 

1. What is processing?

2. What is data processing?

3. What does the term of data processing system mean?

4. What basic operations does a data processing system include?

5. What is inputting / storing / outputting information?

6. What do you understand by resources?

7. How did ancient Egyptians convert facts into useful information?

8. When were mechanical aids for computation developed?

9. What does data storage hierarchy mean?

10. What are the general groupings of any data storage hierarchy?

 

4 Find English equivalents from the text:

Системы обработки информации; определение (терми­на) обработки данных; совокупность фактов; последова­тельность действий; преобразование входных данных в полезную информацию; включать ресурсы; завершить об­работку данных; обеспечивать ввод информации в компь­ютер; ленты принтера; расходовать в большом количестве; размещать компьютерное оборудование; нуждаться (тре­бовать) в приспособлениях; явление современной жизни; на протяжении доисторического периода; превращать ин­формацию в выражения; регистрировать отливы и прили­вы; прогнозировать урожай зерновых культур; механические средства вычисления; ввод данных; хранение данных; первоначальная обработка данных; дополнительная обра­ботка; выдача полезной информации; напечатанное сооб­щение; зрительное отображение; последовательность запо­минания информации; записанные символы языка; элементы информации; база данных; набор взаимосвязан­ных файлов.

 

5 Translate these word chains from English into Russian:

 

Data resource; storage resource; network resource; security resource; system resource.

Communication facilities; data base facilities; display facil­ities; management facilities.

Distance control; device control; keyboard control; position control; program control.

Computer storage; laser storage; file storage; disk storage; data storage hierarchy.

Character sequence; instruction sequence; message se­quence; pulse sequence.

Batch file; catalog file; data file; help file; input file; output file; menu file; user file.

Command input; data input; disk input; file input; keyboard input; program input.

 

6 Give right definition te these terms:

1. Computer	a) the set of instructions that direct the operations of computers;
2. Computer literacy	b) a part of a computer, entering data into the device;
3. A program	c) facts unorganized but able to be organized;
4. Data	d) the output of a data processing system;
5. Data processing	e) possessing sufficient knowledge of how computers work and what they can do to use them as problem-solving tools;
6. Data processing system	f) a series of operations that results in the conversion of data system into useful information;
7. Input	g) an electronic device performing calculations on numerical data;
8. Output	h) an electronic device accepting the data processing results from the computer and displaying them;
9. Useful information	i) a set of related files;
10. Data bank	j) the resources required to accomplish the processing of data. These resources are personnel, material, facilities and equipment.