Operating Systems

An operating system or OS is a program that manages or organizes all computer programs. It is, in a sense, a digital government. Once an OS is initially loaded in a computer through a boot program, it can now run. Programs in an operation system are called application programs or simply – applications. These programs benefit from the OS by creating service requests through a more defined application program interface or API. Moreover, users can directly interact with the OS through a GUI (graphic user interface) or command language.

An OS does a variety of services for applications including managing internal memory sharing amongst multiple applications. In performing more than a single task wherein programs are run by the OS at the same time, the OS identifies what apps must run in a certain order and how long an application should be allowed to run before another app can run. The OS also links messages to an interactive user or application or system operator about the operation status including current errors. 

Additionally, the OS takes care of the input/output from hardware devices attached to the computer such as dial-up ports and printers. An OS is so vital that computers cannot fully run without them, Examples of OS are Windows, Ubuntu, OSX, and Linux.

 

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