IRS Class 8

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Functional systems : 

Functional systems 4 & 6 October 2010

History of organizational systems : 

History of organizational systems Calculation systems Functional systems Integrated systems

Calculation systems : 

Calculation systems 1950-80 Single purpose Eliminate tedious human work Examples: Payroll, General ledger, Inventory Technology used: Mainframes, magnetic tapes, batch processing

Functional systems : 

Functional systems 1975-20?? Use computers to improve operations Applications: Human resources, order entry, manufacturing resource planning Technologies: Mainframes, PC’s, LAN’s

Minicomputer : 

Minicomputer

Functional systems : 

Functional systems Typically contained within a department Islands of automation Applications independently developed and deployed Driving force: availability of mini-computers

Functional system applications : 

Functional system applications Human resources System Accounting and finance systems Sales and marketing System Operations and Manufacturing Systems

Key HR Functions : 

Key HR Functions

Key Finance Functions : 

Key Finance Functions

Key Sales Functions : 

Key Sales Functions

Key Operations Functions : 

Key Operations Functions

Types of Organizational IS : 

Types of Organizational IS Administrative systems Scheduling / Transaction systems Value oriented systems Reporting and controlling systems Analysis and information systems Planning and decision support systems

Problems with Functional Systems : 

Problems with Functional Systems Sharing of data between systems Data duplication Data inconsistency Applications that don’t talk to one another Limited or lack of integrated information Isolated decisions lead to overall inefficiencies Increased expenses

Solution to disparate systems? : 

Solution to disparate systems? Disparate systems are non-integrated systems, the problems of such systems can be solved by: Integration Consolidation Right-sizing Business Process Redesign Enterprise wide system