kuliah pti pertemuan i
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Overview of IS
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Why Do People Need Information?
- Individuals :Entertainment andenlihtenment
- !usinesses :De"ision ma#in$
pro%lem solvinand "ontrol
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Data ' Information
(Data vs) Information * Data
( + ,iven$ or fa"t. a num%er$ a statement$ or api"ture
( /epresents somethin in the real world( 0he raw materials in the produ"tion ofinformation
* Information( Data that have meanin within a "onte1t
( Data in relationships
( Data after manipulation
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Data 3anipulation
E1ample: "ustomer survey
- /eadin throuh data "olle"ted from a
"ustomer survey with 4uestions in various
"ateories would %e time-"onsumin and notvery helpful)
- When manipulated$ the surveys may provide
useful information)
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Information
( 6eneratin Information
7omputer-%ased ISs ta#e data as raw
material$ pro"ess it$ and produ"e information
as output)
Input-process-output
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8Characteristics of useful information
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System
( What Is a System? * System: + set of "omponents that wor#toether to a"hieve a "ommon oal
* Su%system: One part of a system where
the produ"ts of more than one systemare "om%ined to rea"h an ultimate oal
* 7losed system: Stand-alone system thathas no "onta"t with other systems
* Open system: System that interfa"eswith other systems
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Data$ Information$ and Systems
Several subsystems make up this corporate accounting system
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( Information and 3anaers
Systems thin#in
( 7reates a framewor# for pro%lemsolvin and de"ision ma#in)
( <eeps manaers fo"used on overall
oals and operations of %usiness)
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Data$ Information$ and Systems
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Data$ Information$ and Systems
Components of an information system
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0he our Staes of Data Pro"essin
=) Input : Data is "olle"ted and entered into
"omputer)2) Data pro"essin : Data is manipulated into
information usin mathemati"al$ statisti"al$ and
other tools)
&) Output : Information is displayed or presented)
) Storae : Data and information are maintained
for later use)