Systems Software

Applications Software

Hardware

Device Driver

Utility Software

What is an operating system?

User Interface

Graphical User Interface (GUI)

Command-line Interface (CLI)

Natural-language Interface (NLI)

Memory Management

Multitasking

Peripheral Management and Drivers

User Management

File Management

What is Utility Software

Encryption Software

Symmetric Encryption

Asymmetric Encryption

Defragmentation

Data Compression

Lossy Compression

Lossless Compression

Methods of Backup