System Software

What is an Operating System

Collection of programs that provide an interface for hardware and user, so users can run programs.

What is the purpose of Operating Systems

To manage computer systems hardware and software.

What are the functions of Operating Systems

Resource Management (Scheduling)

Memory Management

File Management

Interrupts

Security

Utility Software

User Interface

Input/Output System (Device Drivers)

What is the Difference between Paging and Segmentation

Paging allocates “pages”, which is data slots in the hard disk that are equal size to each other.

Segmentation allocates “segments”, which are data slots in the hark disk which are not equal size to each other.

Pages can be stored in Virtual Memory and paged in and out of RAM when there is not enough storage in RAM

What are the Similarities between Paging and Segmentation

Both are methods to store sections of non-volatile data in hard disk memory