multimedia extension, program management, network service, user interface, security control, application portability, software developer, hardware types, computer hardware, user familiarity, program file, video track.
II. Reading
Ex.5 Read and translate the text
Operating Systems
An operating system is software that manages the overall operation of the computer system. Its primary purpose is to support application programs. The parts of an operating system can be grouped into four broad functional categories. One set of parts forms the shell or user interface; other set of parts is responsible for coordinating multiple computers in a network; a third set coordinates multiple tasks or basic units of work wit a single computer; and, finally, the kernel of the operating system is software that ties the hardware to the software and performs such tasks as keeping track of everything in memory and managing the flow of information to and from disks, the keyboard, and the display screen.
All application programs share some tasks in common. They include accepting characters typed at the keyboard, displaying information on the screen, managing information on a disk, and managing information in memory. The operating system takes care of the details of these tasks. A most important example of how operating systems support application program is the task of managing files. A file is a named collection of information. Whether your application is general or special purpose, your program need to store information in files.
By itself, a disk is an empty platter waiting to be filled. The operating system takes care of
Formatting the disk, which involves electronically preparing the disk to be able to store files.
Managing the location of information on the disk.
- Checking to make sure that errors do not occur when reading to and writing from the disk.
- Performing the input and output necessary to retrieve and store information on the disk. Operating systems also manage the other components of a computer system. They support programs, called device drivers, that control the various hardware devices, such as the keyboard, display screen, and printer. The device driver translates instructions from the application into commands the hardware understands.
A single-tasking operating system runs one application program or task at a time. With multitasking operating systems, you can have more than one application program or task active at a time. The operating system takes care of the details that are required to keep track of each task, know where the task's data are in memory, and allocate a fair share of computing services to each task.
Some operating systems allow integration of dynamic data types such as sound, animation, and video. To accomplish this, the operating system uses multimedia extensions - time-based synchronizing software for managing the coordination of video, sound, and animation. For example, a film might contain a video track and a sound track that need to be coordinated when the film is played on a computer's display screen.
III. Language
Ex. 6 Give English equivalents
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Ex. 7 Give Ukrainian equivalents
Similar functions, in practice, the highly competitive nature, evolve improvements, undergo updates, an ancestor, a descendant, make compatible, temporary windows, without modification, application portability, familiarity with the interface, the safety and privacy of information.
