Operating Systems

Functions of Operating Systems

Controlling the us of processing devices by applications Managing File System Moderating Hardware Providing Security Receiving user input from input devices such as keyboard & mouse. Sending user output to output hardware devices such as monitor or printer. Serving as a platform for applications

Kernel

Core of operating system that is loaded into memory when the system boots up

Drivers

Type of computer Program that allows the operating system to interact with hardware devices

Types of Operating Systems

Windows XP (Home and Professional) Windows Vista (Home Premium, Business and Ultimate) Windows 7 Home Premium, Professional and Ultimate) Windows 8

Applications

A Subclass computer program designed for end users.

Interface

Allows users to interact with the kernel and the utilities. Include command line interface and graphical user interface.

What Is An Operating System?

An operating system if a set of programs that act as an interface between the applications running on the computer and the computer's hardware.

Multi-Tasking

The ability to run multiple applications simultaneously. Variations include cooperative and pre-emptive Multi-tasking

Multi-Threading

The ability to run multiple parts of an application simultaneously.

Multi-Processing

The ability to use multiple processing devices (cpu and Ram)

Utilities

The features or programs included in an operating system that perform system-related tasks.