What Is an Operating System? An operating system (OS) is the fundamental software that acts as the brain of your computer. It's the master program that orchestrates all the computer's operations, ...

Multitasking means to be able to run more than one program simultaneously. In the past, computers with CLIs were unable to multitask - the operating systems of the day only allowed one program to run ...

An operating system is a collection (or suite) of programs that manages and controls the computer. Operating systems have many functions: A user interface is a program, or suite of programs that ...