An information system is a combination of people, hardware, software, communication devices, networks and data resources that processes data and information for a specific purpose. It involves collecting, storing, manipulating and distributing relevant information to support decision making, coordination and control in an organization. There are different types of information systems such as manual-based systems, computer-based systems, knowledge-based systems, and transaction processing systems. Information systems provide many benefits to organizations such as central access to data, easy backup, distribution of information, record keeping and customer analysis.

2. What is a System ?
 It is a collection of interrelated
components that work together to
perform specific task .
Ex.
Human body
Business Organization
A computer

3.  DATA
Data is a collection of facts, figures
and statistics related to an object. Data
can be processed to create
useful information.

4.  INFORMATION
Information
The manipulated and processed form of
data is called information. It is more
meaningful than data. It is used for
making decisions. Data is used as input
for processing and information is the
output of this processing.

5. INFORMATION SYSTEM
is a combination of people, hardware,
software, communication devices,
network and data resources that
processes (can be storing, retrieving,
transforming information) data and
information for a specific purpose.

6. INFORMATION TECHNOLOGY
 is a branch of engineering dealing with
the use of computers and
telecommunications equipment to store,
retrieve, transmit and manipulate data.
 set of methods or techniques for
acquiring, organizing, storing,
manipulating, and transmitting
information.

7. CAPABILITIES OF IS

8. INPUT,PROCESS,OUTPUT,
FEEDBACK
 INPUT is the activity of gathering and
capturing raw data
 PROCESSING converting or transforming
useful data into outputs.
 OUTPUT producing useful information,
usually in the form of documents and reports.
FEEDBACK is information from the system that
is used to make changes to input or processing
activities.

9. MANUAL BASED IS
A system which does not use any computer
devices. Manual is using old method
without the help of the technology or
maybe less to perform certain task or work.
File storage devices, manual procedures and
papers are examples of components of a
manual information system.

10. COMPUTER BASED IS
an information system is an organized combination
of people, hardware, software, communication
networks and the data resources that collects,
transforms and disseminates information in a
organization
Involves five interdependent components
 Hardware ( machines )
 Software ( instruction or program )
 People ( managers, programmers and users)
 Procedures ( Rules )
 Data & Information

11. function-based information system
is for the exclusive
support of a specific application area.
Integrated information systems share
a common database..

12. What are the benefits of using IS ?
central access
easy backup
central distribution of information
easy record-keeping
easy tax preparation
easy customer trait identification

13. TYPES OF IS
KNOWLEDGE BASED
IS
• software that uses artificial
intelligence or expert system
techniques in problem solving
processes. it incorporates
a store (database) of expert
knowledge with couplings
and linkages designed to
facilitate its retrieval
in response to
specific queries, or to transfer
expertise from one domain of
knowledge to another.

14. TRANSACTION-PROCESSING SYSTEMS
(TPS)
is type of information system that collects,
stores, modifies and retrieves data transaction
of an enterprise.

15. FEATURES :
• Rapid response – fast performance with rapid result.
• Reliability – well designed back up and recovery
with a low failure rate
• Inflexibility – treat every transaction quality. It may
be used many times each day which means iy has to
be precise and flexible
• Controlled processing – maintain specific
requirements for the roles and responsibilities of
different employees.