The document discusses the main functions of operating systems, which include resource management, establishing a user interface, and executing and providing services for applications. Specifically, it notes that the operating system manages processes and resource allocation, ensures instructions are handled in queue, and allocates memory and resources for each task. It also states that the resource manager allocates memory and processor resources for scheduled processes to complete tasks.

1. Computer Science
Cape – Unit 2 – Module 3: Main Functions of Operating
Systems

2. Objectives
• At the end of this lesson you will be able to:
• Discuss the functions of the Operating System

3. Operating Systems
• The operating system manages the processes and resource allocation in a real
time system. It ensures that instructions are handled in queue and allocates
processor memory and resources for each task to be completed.

4. Functions of the Operating System
• In its simplest form, the operating system has the following functions;
• Resource Management
• Establishing User Interface
• Execute and provide services for the applications

5. Resource Management
• Given a process that is scheduled to be executed, the resource manager
allocates the appropriate memory and processor resources to complete the
task.

6. Establishing User Interface
• The operating system for any device (smartphone, computer, tablet) will
determine the look and interactivity between the users and the device.

7. The End.