Lesson 8 info systems model

 Week: 8
 Date: 7th
January ,2015
 Time: 09:00 – 10:20hrs
Topic: Information Systems
Sub-Topic: Information System Model
 Class: Sixth Forms
 Objectives: Students will be able to identify
the Resources needed before/during/after
setting up an Information system.

Components of an Information
system
An Information System is a system that accepts
data resources as input and processes them into
information products as output.
How does an information system accomplish
this?
What system components and activities are
involved

Information System Model
• The Five basic resources of Information
Systems are:
People
Hardware
Software
Data
Networks
Components
of an
Information
System

• All information systems use people, hardware,
software, data, and networks resources to
perform input, processing, output, storage,
and control activities that transform data
resources into information products.

People Resources
People are required for the operation of all
information systems. These people resources
include End Users and IT Specialists.
• End users – Also called users or clients are
people who use an information system or the
information it produces. They can be
accountants, salespersons, engineers, clerks,
customers, or managers.

• Most end users in business are knowledge
workers, that is people who spend most of
their time communicating and collaborating in
teams and workgroups and creating, using
and distributing information.
Examples of End users are anyone else who uses
information systems.

• IT Specialists - are people who develop and
operate information systems. They include
systems analysts, software developers, system
operators, and other managerial, technical, and
clerical Information systems personnel.
• Systems analysts design information systems
based on the information requirements of end
users, software developers create computer
programs based on the specifications of the
systems analysts, and system operators help to
monitor and operate large computer systems and
networks.

Hardware Resources
• Hardware resources includes all physical devices
and materials used in information processing.
Specifically, it includes not only machines, such as
computers and other equipment, but also all data
media, that is tangible objects on which data are
recorded, form sheets of paper to magnetic or
optical disks.
• Examples of Hardware Resources are:
Machines – computers, video monitors, magnetic
disk drives, printers, optical scanners
Media – floppy disks, magnetic tape, optical
disks, flash drives, plastic cards, paper forms.

Software Resources
• This includes all sets of information processing
instructions. The generic concept of software
includes not only the sets of operating
instructions called programs, which direct and
control computer hardware, but also the sets
of information processing instructions called
procedures that people need.

Examples of software resources:
• System Software – operating system program, which
controls and supports the operations of a computer
system.
• Application Software – which are programs that direct
processing for the particular use of computers by end
users. For example sales analysts program, payroll
programs, and word processing and spreadsheet
programs.
• Procedures – which are operating instructions for the
people who will use an information system. Examples are
instructions for the filling out a paper form or using a
software package, error corrections, paycheck distribution
and data entry procedures.

Lesson 8 info systems model

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