What an operating system is
Name the operating system your device runs and find its version.
The operating system is the manager of your machine. It starts when you press the power button, and everything else asks it for permission.
When you tap an app, the operating system finds it, gives it a slice of memory, and puts it on the screen. When you print, it talks to the printer for you. You never see it directly, and that is the point.
There are only a handful of common ones. Phones and tablets run iOS, iPadOS, or Android. Computers run Windows, macOS, or ChromeOS. Knowing which one you have is the single most useful fact when you ask anybody for help.
It also has a version number, like a model year. Instructions often say "on iOS 18" or "on Windows 11" because the buttons moved between versions. If the pictures do not match your screen, the version is usually why.
Key points
- The operating system runs everything else on the device.
- Common ones are iOS, iPadOS, Android, Windows, macOS, ChromeOS.
- It has a version number, like a model year.
- Settings, then General, then About shows both.
- Mismatched instructions usually mean a different version.
What to remember
- The About screen answers the question every helper asks first.
- When steps do not match, check your version before you assume something is wrong.
- Answering with the operating system saves ten minutes of back and forth.
Try this
Open Settings on your own phone or computer, find the About screen, and write the operating system name and version on a card you keep near the device.
Practice: What an operating system is. Your first lesson is free, with no account or card; the rest are part of a Lantern plan. Interactive lessons require JavaScript.