Session 1 Introduction To I.T. 3.0
Session 1 Introduction To I.T. 3.0
Session 1 Introduction To I.T. 3.0
INTRODUCTION TO IT
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Data and Information
• Age
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Data and Information
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What is a System?
• Interrelated components
• Defined boundary
• Working together
• Common objectives
• Accepting inputs and producing outputs
• Organized transformation process
Defining a System
• A set of interrelated components that
collect, manipulate, and disseminate
data and information, and provide
feedback to meet an objective.
• Information system:
– Set of interrelated components
– Collect, process, store, and distribute
information
– Support decision making, coordination,
and control
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Perspectives on Information Systems
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The Order Fulfillment Process
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Levels in a Firm
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Types of Business Information Systems
• Transaction processing systems
– Perform and record daily routine transactions
necessary to conduct business
• Examples: sales order entry, payroll, shipping
– Allow managers to monitor status of operations
and relations with external environment
– Serve operational levels
– Serve predefined, structured goals and decision
making
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Types of Business Information Systems
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Types of Business Information Systems
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How Management Information Systems Obtain
Their Data from the Organization’s TPS
In the system illustrated by this diagram, three TPS supply summarized transaction data to the
MIS reporting system at the end of the time period. Managers gain access to the organizational
data through the MIS, which provides them with the appropriate reports.
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Executive support systems
– Support senior management
– Address non-routine decisions requiring
judgment, evaluation, and insight
– Incorporate data about external events (e.g. new
tax laws or competitors) as well as summarized
information from internal MIS and DSS
– Example: ESS that provides minute-to-minute
view of firm’s financial performance as measured
by working capital, accounts receivable, accounts
payable, cash flow, and inventory
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