1. Dinesh Mirchandani University of Missouri – St. Louis
Information Technology: Strategic Decision Making For Managers Henry C. Lucas Jr. John Wiley & Sons, Inc
Dinesh Mirchandani
University of Missouri – St. Louis
Copyright 2004 John Wiley & Sons, Inc.

2. Copyright 2004 John Wiley & Sons, Inc.
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3. The First Component: Computer Systems
Chapter 13
The First Component: Computer Systems
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4. The Computer Changed the World
Advancement in computing
Development of electronics to replace manual calculators
Programs and data residing in computer memory
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Types of Systems
Mainframes
Process transactions and maintain vital data
Proprietary hardware
Represent heavy investments
Process large amounts of data
Supercomputers
Speeds of teraflops
parallel computing and vector technology
Mini-computers
PCs
Copyright 2004 John Wiley & Sons, Inc.

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Types of Systems
Client server systems
Network computers
Massively parallel computers
Grid computing
PDAs
Mobile computing
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Client Server Systems
The quest for smaller and faster chips
Large and small servers
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Web Services
Variety of software and programming techniques that foster integration between disparate applications
Based on XML
Components include
Simple object access protocol (SOAP)
Universal description, discovery and integration (UDDI)
Web services description language (WSDL)
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Trends
The Semantic Web
Attaching meaning to the contents of the Web
Moving software to the cloud
Avoiding software ownership
Ubiquitous computing
A world wide computer
Copyright 2004 John Wiley & Sons, Inc.

10. Copyright 2004 John Wiley & Sons, Inc.
Summary
Changes in the technology force changes in hardware and software
Efforts are underway to store content on the Web such that programs can interpret content meaning
Trends to watch include ubiquitous computing and software distribution on the Internet
Copyright 2004 John Wiley & Sons, Inc.