Single-tasking and multi-tasking
A single-tasking system can only run one program at a time, while a multi-tasking operating system allows more than one program to be running See more

Unix and Unix-like operating systems
Unix was originally written in assembly language. Ken Thompson wrote B, mainly based on See more

A real-time operating system (RTOS) is an operating system intended for applications with fixed deadlines (real-time computing). Such applications … See more

If an application is written for use on a specific operating system, and is ported to another OS, the functionality required by that application may … See more

Early computers were built to perform a series of single tasks, like a calculator. Basic operating system features were developed in the … See more

The components of an operating system all exist in order to make the different parts of a computer work together. All user software needs to go through the operating system in … See more

A hobby operating system may be classified as one whose code has not been directly derived from an existing operating system, and has few users and active developers. See more