Chapter 9

An operating system (OS) is a set of programs containing instructions that work together to coordinate all the activities among computer and mobile device hardware. OS functions is to stating computers and mobile devices with turn on the power button. A user interface (UI) controls how you enter data and instructions and how information is displayed on the screen. An operating system handles programs can directly affects your productivity in 3 types; single tasking and multitasking, foreground and background, single user and multiuser. The operating system determines the order in which tasks are processed. A driver is a small program that tells the operating system how to communicate with a specific device. Operating systems also typically provide a means to establish Internet connections. A desktop operating system is a complete operating system that works on desktops, laptops, and some tablets such as Windows, Mac OS, UNIX, LINUX. There are mobile OS which is Android, iOS and Windows Phone.