Operating systems

Why do you need an operating system

Different operating systems

Utility software

Disk defragment

Back ups

Anti-virus Programs

Data compression

Firewall

File management

The kernel

Kernel uses

Memory management

Virtual memory

Segmentation

Paging

Why is memory management important?

Backing store/File management

Spooling

Advantages of spooling

Interrupt Handling

Reasons for interrupts.

Sources of interrupts

priority and interrupt management

Scheduling, Job queues and priorities

Methods of scheduling

Different types of OS and their uses

Multi-User OS

How it works

Multi-Tasking OS

How it works

Multi-User, Multi-Tasking OS

Embedded system