Operating systems

Operating systems

1. What is an Operating System?

   • Operating systems help computers run smoothly by allowing multitasking and providing user interaction.

2. Types of Operating Systems

   • Mobile OS Example: Android for smartphones and tablets.
   • Linux OS Known for flexibility and security.
     • Early Computers Limited to running one program at a time.

3. Security and Multitasking

   • Security Role of OS: Keeps files safe and controls access.
   • Multitasking: Allows running multiple apps simultaneously.

4. Hardware and Binary Language

   • Hardware: Physical components like CPU and memory
   • Binary Language: OS translates human commands into 0s and 1s

5. User Interfaces

   • Graphical User Interface (GUI): User-friendly with icons and pictures
   • Command-Line Interface (CLI): Text-based control for advanced users.

6. Roles in Security

   • Security Analyst: A person who sets up firewalls and security measures.
   • Task Execution in GUI: Easier user interaction using buttons and pictures.