WAn operating system (OS) is system software that manages computer hardware, software resources, and provides common services for computer programs.
WThe usage share of operating systems is the percentage of computing devices that run each operating system (OS) at any particular time. All such figures are necessarily estimates because data about operating system share is difficult to obtain; there are few reliable primary sources – and no agreed methodologies for its collection.
WThe kernel is a computer program at the core of a computer's operating system that has complete control over everything in the system. It is the "portion of the operating system code that is always resident in memory", and facilitates interactions between hardware and software components. On most systems, the kernel is one of the first programs loaded on startup. It handles the rest of startup as well as memory, peripherals, and input/output (I/O) requests from software, translating them into data-processing instructions for the central processing unit.
WLinux is a family of open-source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991, by Linus Torvalds. Linux is typically packaged in a Linux distribution.
WThe Linux kernel is a free and open-source, monolithic, modular, multitasking, Unix-like operating system kernel. It was conceived and created in 1991 by Linus Torvalds for his i386 based PC, and it was soon adopted as the kernel for the GNU Operating System, which was created as open source and free software, and based on UNIX as a by-product of the fallout of the Unix wars. Since then, it has spawned a plethora of operating system distributions, commonly also called Linux.
WThe North Star Horizon was a popular 8-bit S-100 bus computer introduced in October 1977. Like most S-100 machines of the era, it was built around the Zilog Z80A microprocessor, and typically ran the CP/M operating system. It was produced by North Star Computers, and it could be purchased either in kit form or pre-assembled. The North Star Horizon was one of the first computers to have built in floppy drives as well as being one of the first computers to have a hard disk drive.
WSugar is a free and open-source desktop environment designed for interactive learning by children. Copyright by SugarLabs. Developed as part of the One Laptop per Child (OLPC) project, Sugar was the default interface on OLPC XO-1 laptop computers. The OLPC XO-1.5 and later provided the option of either the Gnome or Sugar interfaces.
WSYmbiosis Multitasking Based Operating System (SymbOS) is a multitasking operating system for Zilog Z80-based 8-bit computer systems.
WVisopsys,, is an operating system, written by Andy McLaughlin. Development of the operating system began in 1997. The operating system is licensed under the GNU GPL, with the headers and libraries under the less restrictive LGPL license. It runs on the 32-bit IA-32 architecture. It features a multitasking kernel, supports asynchronous I/O and the FAT line of file systems. It requires a Pentium processor.
WZorin OS is a personal computer operating system designed and promoted for users new to Linux-based computers. One of its built-in features lets users change the interface to resemble those of Microsoft Windows or MacOS. Wine and PlayOnLinux can be easily installed in Zorin OS, allowing users to run Windows software for ease of transition and gaming. Zorin OS's creators maintain three free-of-charge editions of the operating system, and an "Ultimate" edition for purchase.