An operating system (OS) is a set of software that manages computer hardware resources and provides common services for computer programs. The operating system is a vital component of the system software in a computer system. Application programs require an operating system to function.

Time-sharing operating systems schedule tasks for efficient use of the system and may also include accounting for cost allocation of processor time, mass storage, printing, and other resources.

For hardware functions such as input and output and memory allocation, the operating system acts as an intermediary between programs and the computer hardware, although the application code is usually executed directly by the hardware and will frequently make a system call to an OS function or be interrupted by it. Operating systems can be found on almost any device that contains a computer—from cellular phones and video game consoles to supercomputers and web servers.

Examples of popular modern operating systems include Android, BSD, iOS, GNU/Linux, Mac OS X, Microsoft Windows,Windows Phone, and IBM z/OS. All these, except Windows and z/OS, share roots in UNIX.

Charles Morton (28 January 1908, Illinois, USA – 26 October 1966, North Hollywood, California), was an American actor.

Born in Illinois, Charles Morton spent his adolescence in Madison, Wisconsin; receiving his education at Madison High School and the University of Wisconsin–Madison.

He made his first stage appearance at the age of seven and later appeared in vaudeville, stock and the legitimate stage. Morton's career started late in the silent era, first as a leading man, continued into sound features and finally television.

His polished physical appearance, charm and personality were noted by the studios and at the age of 20 signed his first contract with Fox in 1927. Audiences first discovered the handsome youth that same year opposite the studio's leading flapper, Madge Bellamy, in Colleen, one of the era's many comedy-dramas.

Morton went on the star in John Ford's 1928 World War I silent film Four Sons. Morton was also a member of the ultimately tragic circus troupe in F. W. Murnau's near-classic 4 Devils, among the most mourned of the lost films of the silent era. Morton also starred in Fox's None But the Brave (1928).