Module 2~8 min
What Is an Operating System?
An operating system, or OS, is the software that manages a computer's hardware and lets you run other programs on top of it.
What You'll Learn
- What an operating system does
- How it connects hardware and software
- Why every general-purpose computer needs one
The Operating System's Job
The operating system manages a computer's hardware, runs the programs you open, and provides the interface you interact with -- windows, icons, menus, and the desktop or home screen itself.
Without an Operating System
Hardware alone can't do anything useful on its own; it needs the operating system to organize and coordinate it.
Example
A computer without an operating system is a bit like a car with an engine but no dashboard or controls -- the raw power is there, but there's no way to actually drive it.
Key Concepts
Operating SystemInterfaceHardware Management
Key Takeaways
- The operating system manages a computer's hardware
- The operating system lets you run other software
- Every general-purpose computer needs an operating system
Knowledge Check
What is the main job of an operating system?