INTRODUCTION OF
SYSTEM & APPLICATION
SOFTWARE
OPERATING SYSTEM (OS)
An operating system, or OS, is a software program that
enables the computer hardware to communicate and operate
with the computer software. Without a computer operating
system, a computer would be useless.
OS
SYSTEM SOFTWARE - OS
 Controls computer functions
 Hardware
 Processor
 Memory
 Devices
 Provides means for software to work with the CPU
 Responsible for management, scheduling, and
interaction of tasks
 Provides user interface
TYPES OF OPERATING SYSTEM
»Graphical User Interface (GUI)
»Multi-user
»Multiprocessing
»Multitasking
GUI - Short for Graphical User Interface, a
GUI Operating System contains graphics and
icons and is commonly navigated by using a
computer mouse.
Multi-user - A multi-user operating system
allows for multiple users to use the same
computer at the same time and different
times.
Multiprocessing - An operating system
capable of supporting and utilizing more than
one computer processor.
Multitasking - An operating system that is
capable of allowing multiple software
processes to run at the same time.
THE OS FUNCTIONS
Provides a user interface
Manages the CPU
Manages memory and storage
Manages hardware and secondary devices
Coordinates application software with the
CPU
APPLICATION SOFTWARE
 Application software helps users solve particular problems
 In most cases, application software resides on the computer’s
hard disk
 Application software can also be stored on CDs, DVDs, and
flash or keychain storage devices
Systems VS Application Software
PERSONAL APPLICATION SOFTWARE
Serves the needs of an individual user
Includes personal productivity software
Enables users to improve their personal
effectiveness
DATABASE
MANAGEMENT
Data is a vital part of any organization. It needs to be stored, organized,
managed, accessed, protected and manipulated.
Operational
Use databases to:
Create a book
Track book sales
Set salaries and wages
Pay employees
Uses

Keep track of a large number of related facts
 Query the data for specific information
 Retrieve information in a variety of ways
Functions

Store data
 Update data
 Manipulate data
 Retrieve data
 Print data in many forms
 Report on data in a variety of ways