Abstraction Layer: OSI model, Computer network, Protocol (computing), OpenGL, Byte stream, Unix, MSDOS, Linux, Operating system, Computer hardware, Device Independence, Virtual device, File system - Softcover

 
9786130045159: Abstraction Layer: OSI model, Computer network, Protocol (computing), OpenGL, Byte stream, Unix, MSDOS, Linux, Operating system, Computer hardware, Device Independence, Virtual device, File system
Softcover
ISBN 10: 6130045158 ISBN 13: 9786130045159
Publisher: Alphascript Publishing, 2010

Synopsis

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online.An abstraction layer (or abstraction level) is a way of hiding the implementation details of a particular set of functionality. Software models that use layers of abstraction include the OSI 7 Layer model for computer network protocols, the OpenGL graphics drawing library, and the byte stream input/output (I/O) model originated by Unix and adopted by MSDOS, Linux, and most other modern operating systems. In the Unix operating system, most types of input and output operations are considered to be streams of bytes being read from a device or being written to a device. This stream of bytes model is used for file I/O, socket I/O, and terminal I/O in order to provide device independence. In order to read and write to a device at the application level, the program calls a function to open the device which may be a real device such as a terminal or a virtual device such as a network port or a file in a file system. The device''s physical characteristics are mediated by the operating system which in turn presents an abstract interface that allows the programmer to read and write bytes from/to the device.

"synopsis" may belong to another edition of this title.

Reseña del editor

Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online.An abstraction layer (or abstraction level) is a way of hiding the implementation details of a particular set of functionality. Software models that use layers of abstraction include the OSI 7 Layer model for computer network protocols, the OpenGL graphics drawing library, and the byte stream input/output (I/O) model originated by Unix and adopted by MSDOS, Linux, and most other modern operating systems. In the Unix operating system, most types of input and output operations are considered to be streams of bytes being read from a device or being written to a device. This stream of bytes model is used for file I/O, socket I/O, and terminal I/O in order to provide device independence. In order to read and write to a device at the application level, the program calls a function to open the device which may be a real device such as a terminal or a virtual device such as a network port or a file in a file system. The device''s physical characteristics are mediated by the operating system which in turn presents an abstract interface that allows the programmer to read and write bytes from/to the device.

"About this title" may belong to another edition of this title.

Publisher
Alphascript Publishing
Publication date
2010
Language
English
ISBN 10 
6130045158
ISBN 13 
9786130045159
Binding
Tapa blanda
Number of pages
208
Editor
Miller Frederic P, Vandome Agnes F, McBrewster John