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Дәріс №3

Тақырыбы: Software. Operating systems

Сағат саны: 1

Тақырыптың негізгі сұрақтары/ жоспары:

  1. Software types

  2. Basic Concepts of Operating Systems

  3. Classification of operating systems for mobile devices

  4. Classification of desktop applications

Дәріс тезисі:

The software is a set of programs of information processing system and program documents necessary for operation of these programs (GOST 19781-90) or a set of programs, procedures and rules, as well as documentation relating to functioning of a data processing system (ST of ISO 2382/1-84).

System software represents a complex of programs providing effective control of components of a computing system –processor, random access memory, input-output channels, network equipment, being an intermediate interface between the equipment and applications of a user. The system software does not solve specific application-oriented objectives, but only ensures functioning of other programs; it controls hardware resources of the computing system, etc.



An operating system is an interface between a user and a computer. In addition, OS allows controlling all components of the computing system, realizing the ordered and controlled distribution of resources between programs.

The evolution of OS had several stages:



  1. 1945-1955. Appearance of electron tubes, cross-connect patch panel. Libraries of mathematical and system programs were applied as the system software.

  2. 1955-1960. Appearance of transistors. OS is a batch processing system.

  3. 1960-1980. Appearance of integrated microcircuits and multiprogramming. Multiprogramming systems included implementation of protective mechanisms between programs, use of exclusive programs, memory protection, and interruptions.

  4. 1980-up to nowadays. Appearance of big integrated circuits and systems for operation in networks and distributed OS.

Operating systems are divided into:

  • single-task (for example, MS-DOS, MSX);

  • multitask (OC EC, OS/2, UNIX, Windows 95);

  • single-user (MS-DOS, Windows 3.x, early OS/2 versions);

  • multi-user (UNIX, Windows NT);

  • non-preemptive multitasking (NetWare, Windows 3.x);

  • preemptive multitasking (Windows NT, OS / 2, UNIX);

  • multi-threaded OS;

  • multiprocessor (Solaris 2.x, Open Server 3.x, OS / 2, Windows and NetWare 4.1).


Бекіту сұрақтары

  1. What is a user interface?

  2. What is the usability?

  3. How are user interfaces classified?

  4. What types of interfaces testing exist?

  5. What means can provide the access to WIMP interface?

  6. What means can provide the access to SIIK interface?

  7. What does the process of creation of user interface include?

  8. What is the principle of system testing?

  9. What new tendencies exist in the field of creation of user interfaces?

What does modular testing represent?

Әдебиет: Негізгі[1-5], қосымша [1-5]


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