The History Of The Operating System

Nothing can happen on a computer without an operating system. That interface allows the user to communicate with the machine and manage all functions and resources of the computer, nothing could be more important than the operating system. Old computers often used mainframe operating systems have been developed from IBM System/360 (or OS/360). The OS/360 initiated a number of concepts that are still visible in modern operating systems, some applications written for OS/360 are still usable on modern machines. A concept that is unique to the system is the fact that once a program was started, the system would keep track of all available resources, including storage, locks, files, and so result. When the process has ended, all resources would be recovered by the operating system. For batch processing, Control Data Corporation developed the SCOPE operating system (in 1960) and the Kronos and NOS systems later in the 70s. They were descendants of archaic BASIC system, which provided progress in early timesharing and programming languages. Next logical step from Control Data was the PLATO operating system (in collaboration with the University of Illinois). Plato uses plasma screens and long distance networks, and was drilled as real-time chat and multiuser games. another operating system was expected Burroughs MCP system, written in a high-level language (ESPOL). MCP (circa 1961) gave the first example viable virtual memory. MCP is actually still in use today on the Unisys ClearPath line of computers. The front huge investment in fixed capital for early computers, it is necessary to continue to develop compatible operating systems, which partly explains why some of the old mainframe operating systems are still in use. An early operating system “computers” is the disk-based CP / M, which was designed similarly to MS-DOS operating system modern IBM PC. Major competitors of IBM, which erupted in the 1980s was, of course, the Apple Macintosh and Mac OS. With the advent of the 386 Intel chips, personal computers were soon able to run OS multitasking, something that was previously restricted to large mainframe machines. The chip 32-bit architecture has paved the way for Microsoft to develop the operating system Windows NT and Apple Mac OS X. Over time, the next operating system that would emerge Linux, a descendant of Unix and Minix. Linux would open the door to a revolutionary open-source as it was distributed free to users, such as FreeBSD, NetBSD and OpenBSD. Such progress would evolve into what we know and take for granted that the modern PC systems. Today, Microsoft’s Windows OS still dominates a large share of the market for personal computers or professionals, but all modern systems has its strengths and weaknesses. But regardless of the operating system, they all cover the same tasks: memory management dual transfer mode (supervisor mode and mode protected) virtual memory Process Management Kernel Preemption File Management < / p> Device drivers Security Networking file system support