Summarize the key concepts of operating systems, including their definition, functions, and types, as well as the definition of a network.

Here are the notes from the image:

Introduction to Operating Systems

• Operating System (OS): Main program that manages both software and hardware of a device.
  • E.g. Windows, Linux, Android, etc.
• Process: Series of sequences when finishing a basic task.

Operating System Functions

• Memory Management
• File Management
• Process Management
• Device Management

Types of Operating Systems

• Batch Operating Systems
• Time-sharing Operating Systems
• Real Time Operating Systems
• Multi-tasking Operating Systems

Network

• Devices that are connected to each other and can share resources over the internet.