LO3 - Know the features and functions of information systems

3.1 Features of Information Systems

An information system has 5 parts:


Data

Raw information
The data input to the system must be accurate
It should be stored in logical way such as pen drive and hard disk.

People

People are involved both in capturing the data and manage the information.

Hardware

Management information system (MIS) may run on just the sales and finance director's PC.
It usually runs on a server, either shared or dedicated with Internet or intranet access for those who need it.
Used for storing data.
It is unusual to require specialized hardware.
computer and server

Software

MIS can be built using standard software.
manage the information in the computer.

Telecommunications

To connect with the use of internet.
MIS are delivered across an intranet within a company's firewall for protection from competitors and others seeking this valuable management information.
Used to protect and secure the data.

3.2 Functions of Information Systems


Input

Data
There is the detailed data which is stored and processed and forms the basis for the output from the system. (Automatic)
The user must also tell the system what sort of analyses they want from the system. (Manual)

Storage

Where the data being stored
The purpose of saving data is for the later use or back up.

Processing

When the data turns into information.

Output

Outcome of information that has been processed which can be either graphical or textual.
2 formats:-

Graphical



  • Charts
  • Visual
  • Picture

Textual


  • Text
  • Numbers
  • Characters


Control and feedback loops

purpose - stock control system.
to see which products are selling well and which are not.
To maximize profit. increase price if well or not.
if low, promo. if high, increase price.

Closed systems

the outputs are fixed.
mainly use graphical formats.
often aimed at management.

Open systems

have a choice on how to present the output.

3.3 Transformation of Data into Information


3.4 Types of Information Systems


Management Information Systems
Features
The information systems that is provided and managed are accessible for all of the company departments.
The information that is managed are relevant and appropriate for the manager.

Benefits
It can promotes better communications between departments in the organization.
MIS can improves the employee productivity.

Effectiveness Criteria 
The information is very accurate as the information that is provided and manage are real-time data. Therefore the information can be trusted because it is primary information.

Marketing Information Systems
Features
The information provided can be used for decision making because the data is in real time.

Using of a computer because the computer is used to collect, store and manipulate larges amount of data.

Benefits
The data that are collected in Marketing Information System can help to be organized so this can improve productivity.
Marketing Information System can be used for analysis and planning.

Financial Information Systems

Features
Ensure data security - only authorized user can access the financial information systems.
Reduce the paperwork - can be recorded and updated on the system automatically.

Benefits
Financial information systems provides good information where the information can be used for quick decision making.
Budget control where the money can be manage properly.

Human Resources Information Systems

Features
HR information system allows the company to keep the employee information and their payroll data information.
Human resource information system can be used for viewing the employee's performance directly from the systems instead of searching it through paperwork..

Benefits
Human resource information system can promote data integrity.
It can improve the productivity and enhance the efficiency of Human resources department.

3.5 Management Information Systems






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