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Lesson 2: Operating systems and software

An operating system (OS)

Manages computer’s Runs the software and Allows a user to communicate
Functions hardware with the computer easily

• An operating system (OS):

➢ Coordinates and manages the communication between
your hardware and software.
➢ Verifies the requirements for each program and the

computer components.
• A computer component:

Central Processing Unit (CPU) Memory and storage

• Pre-loaded OS:

➢ When you buy a computer or device, it usually has a pre-loaded OS.
➢ Most laptops and computers have Microsoft Windows pre-loaded and this OS
is often used in schools and organizations.

• MacOS:

➢ Macintosh computers use macOS.
➢ macOS is generally more expensive.
➢ Smartphones and tablets use different operating systems
such as Android and iOS.

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