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© 2004 Ken Baldauf, All rights reserved.
Why Study Computers?
Using Computers to Achieve Goals
Careers and Computers Computers and the Internet Computer Systems Computer Systems Development,
Security, and ControlPlease turn your cell phone off.
© 2004 Ken Baldauf, All rights reserved.
A Computer
An electronic device used to perform calculations and other digital functions at high speed.
Computer activities Input Processing Storage Output
How do these concepts relate to an MP3 player?
© 2004 Ken Baldauf, All rights reserved.
Producing Valuable Information
Data: raw facts Information: data organized and presented
in a manner that provides value to the user. Preferably accurate, complete, economical,
flexible, reliable, relevant, simple, timely, and verifiable
How do these concepts relate to
© 2004 Ken Baldauf, All rights reserved.
Advantages of Using Computer Systems
Increases in Productivity Improved Quality Competitive Advantage
How do these concepts relate to
© 2004 Ken Baldauf, All rights reserved.
Careers and Computers
A Survey of Computer Use in Careers
~Please read on your own
© 2004 Ken Baldauf, All rights reserved.
Hardware
Hardware includes all of the tangible parts of a computer system used to input, process, store, and output data and information.
© 2004 Ken Baldauf, All rights reserved.
Software
Software consists of programs and instructions given to the computer to execute and run.
Two types: Application software serve people’s needs System software serves the computer systems
needs
© 2004 Ken Baldauf, All rights reserved.
SINGLE USER SYSTEMS
Types of General Purpose Computer Systems
Personal Computers (PCs)Small, inexpensive, often called microcomputers.
WorkstationsHigh-end special-purpose microcomputers
Midrange Computers Size of a three drawer file cabinet and accommodates several users at one time.
Mainframe Computers Large and powerful, shared by hundreds concurrently.
Supercomputers Most powerful with fastest processing speeds.
MULTI-USER SYSTEMS(SERVERS)
© 2004 Ken Baldauf, All rights reserved.
Special-Purpose Computer systems
Computers designed for one task.
Kiosk
Game consoles
Digital Music Players
Can you think of any others?
© 2004 Ken Baldauf, All rights reserved.
The Processor
The processor carries out program instructions to accomplish a goal.
Increasing processor speeds are expanding the boundaries of our capabilities both professionally and personally.
Production Sequencing Facility at DOE's Joint Genome Institute in Walnut Creek, CA
Slugfest Video Game for XBox
© 2004 Ken Baldauf, All rights reserved.
Storage Storage devices hold data permanently. Memory, or RAM, is a form of storage that holds
data temporarily. Advances in storage technologies have brought
advanced multimedia applications into the home, and sparked the production of numerous portable digital devices.
Like a suped-up Tivo,this 1 TB
digital video recorder from
Sony can store 1,000 hours of
television programming.
The iPod from Apple stores 10,000 songs.
© 2004 Ken Baldauf, All rights reserved.
Input and Output Devices
While the keyboard and mouse remain the most common input device, new methods of inputting data, such as voice commands and stylus are making human computer interaction more natural.
Interacting with your computer using a stylus will become commonplace as tablet PCs become increasingly popular.
© 2004 Ken Baldauf, All rights reserved.
Computer Systems
Database Systems Telecommunications and Networks E-commerce & Transaction Processing Information, Decision Support Systems Artificial Intelligence
© 2004 Ken Baldauf, All rights reserved.
Database Systems
Database: an organized collection of facts and information.
Database of known Web sites associated
with key words
http://news.bbc.co.uk/1/hi/technology/3497395.stm
© 2004 Ken Baldauf, All rights reserved.
Transaction Processing Systems (TPS)
Transaction: an exchange of goods
TPS: an information system designed to support and record completed transactions
© 2004 Ken Baldauf, All rights reserved.
E-commerce
E-commerce involves conducting business or other transactions online, over the Internet or other telecommunications system. Business-to-business (B2B) Business-to-consumer (B2C) Consumer-to-consumer (C2C)
© 2004 Ken Baldauf, All rights reserved.
Management Information Systems (MIS)
MIS: an information system designed to provide routine information to managers and decision makers
© 2004 Ken Baldauf, All rights reserved.
Decision Support Systems (DSS)
DSS: An information system designed to support problem-specific decision making.
© 2004 Ken Baldauf, All rights reserved.
Artificial Intelligence and More
Artificial Intelligence: computer systems take on characteristics of human intelligence.
Expert System: an information system that can make suggestions and reach conclusions in much the same way as a human expert.
http://www.artificial-life.com
© 2004 Ken Baldauf, All rights reserved.
Computer Systems Development, Security, and Controls
Please read on your own.