mis info. system ppt
TRANSCRIPT
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8/7/2019 MIS Info. System Ppt.
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MIS 715 Eaton Fall 2001 1
Information SystemsInformation Systems
Why Do People Need Information?
Individuals - Entertainment and enlightenment
Businesses - Decision making, problem solving and
control
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MIS 715 Eaton Fall 2001 2
Data, Information,Data, Information,
and Systemsand SystemsData vs. Information
DataA given, or fact; a number, a statement, or a picture
Represents something in the real world
The raw materials in the production of information
Information
Data that have meaning within a context
Data in relationships
Data after manipulation
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MIS 715 Eaton Fall 2001 3
Data, Information,Data, Information,
and Systemsand SystemsData Manipulation
Example: customer survey
Reading through data collected from a customer survey with
questions in various categories would be time-consuming and
not very helpful.
When manipulated, the surveys may provide useful
information.
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MIS 715 Eaton Fall 2001 4
Data, Information,Data, Information,
and Systemsand Systems Generating Information
Computer-based ISs take data as raw material, process it, and
produce information as output.
Figure 1.1 Input-process-output
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MIS 715 Eaton Fall 2001 5Figure 1.2 Characteristics of useful information
Data, Information,Data, Information,
and Systemsand Systems Information in Context
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MIS 715 Eaton Fall 2001 6
Data, Information,Data, Information,
and Systemsand Systems What Is a System?
System: A set of components that work together to achieve acommon goal
Subsystem: One part of a system where the products of morethan one system are combined to reach an ultimate goal
Closed system: Stand-alone system that has no contact with othersystems
Open system: System that interfaces with other systems
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MIS 715 Eaton Fall 2001 7
Data, Information,Data, Information,
and Systemsand Systems
Figure 1.3 Several subsystems make up this corporate accounting
system.
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MIS 715 Eaton Fall 2001 9
Data, Information,Data, Information,
and Systemsand Systems
Figure 1.5 Qualities of humans and computers that contribute to
synergy
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MIS 715 Eaton Fall 200110
Data, Information,Data, Information,
and Systemsand SystemsThe Benefits of Human-Computer Synergy
Synergy
When combined resources produce output that exceeds the
sum of the outputs of the same resources employed separately
Allows human thought to be translated into efficient
processing of large amounts of data
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MIS 715 Eaton Fall 200111
Data, Information,Data, Information,
and Systemsand Systems
Figure 1.6 Components of an information system
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MIS 715 Eaton Fall 200112
Data, Information,Data, Information,
and Systemsand SystemsThe Four Stages of Data Processing
Input: Data is collected and entered into computer.
Data processing: Data is manipulated into information using
mathematical, statistical, and other tools.
Output: Information is displayed or presented.
Storage: Data and information are maintained for later use.
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MIS 715 Eaton Fall 200113
Why Study IS?Why Study IS? Information Systems Careers
Systems analyst, specialist in enterprise resource planning (ERP),
database administrator, telecommunications specialist, consulting, etc.
Knowledge Workers Managers and non-managers
Employers seek computer-literate professionals who know how to use
information technology.
Computer Literacy Replacing Traditional Literacy
Key to full participation in western society
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MIS 715 Eaton Fall 200114
Ethical and Societal IssuesEthical and Societal IssuesThe NotThe Not--SoSo--Bright SideBright Side
Consumer Privacy
Organizations collect (and sometimes sell) huge
amounts of data on individuals.
Employee Privacy
IT supports remote monitoring of employees, violating
privacy and creating stress.
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MIS 715 Eaton Fall 200115
Ethical and Societal IssuesEthical and Societal Issues
The NotThe Not--SoSo--Bright SideBright Side
Freedom of Speech IT increases opportunities for pornography, hate speech, intellectual
property crime, an d other intrusions; prevention may abridge freespeech.
IT Professionalism No mandatory or enforced code of ethics for IT professionals--unlike
other professions.
Social Inequality Less than 20% of the worlds population have ever used a PC; less than
3% have Internet access.