Байланысты: Morozova E.N. English for IT Students(2)
Types of Operating Systems UNIX was the first multi-user, multiprocessor, multitasking operating system available for use on PCs. In many ways, UNIX served as the model for other PC operating systems.
DOS is a single-user OS that supports only 640 KB of memory. It features a command-line interface and does not support multitasking or multiprocessing.
The Macintosh operating system supports the graphical nature of the Macintosh computer. The Mac OS brought the first truly graphical user interface to consumers. It also brought interface conformity to the desktop.
Windows 3.0, 3.1, and 3.11 brought a graphical user interface and multitasking capabilities to PCs that ran DOS. Windows 3.x is an operating environment.
IBM's OS/2 Warp was the first true GUI-based operating system for Intel-based PCs. OS/2 is a multitasking operating system that provides support for networking and multiple users.
Microsoft's Windows NT was originally meant as a replacement for DOS but was too resource-intensive to work on most PCs at the time of its release. Microsoft issued two versions-Windows NT Workstation and Windows NT Server.
Windows 95 was Microsoft's first true GUI-based, 32-bit operating system for Intel PCs. Its strengths include multitasking and the capability to run older DOS and Windows 3.x programs.
The features of Windows 98 include advanced Internet capabilities, an improved user interface, and enhanced file system performance, among others.
Linux is a version of UNIX and is available free or at a low cost from various sources. Despite its low cost, it is a powerful 32-bit OS that supports multitasking, multiple users, networking, and almost any application.
Windows 2000 includes the same interface and features of Windows 98, with the file system, networking, power, and stability of Windows NT. Several versions of Windows 2000 are available, each targeting a specific user or computing environment.
