professor michael j. losacco cis 1110 – using computers introduction to computers chapter 1
TRANSCRIPT
Professor Michael J. LosaccoCIS 1110 – Using Computers
Introduction to ComputersChapter 1
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Overview
Explain Computer Literacy
Define Hardware & Software
Identify Computer Components
Differentiate Various Software Types
Differentiate Computer Platforms
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A World of Computers
Notable Technology Prognostications“I think there is a world market for maybe five computers.”
Thomas Watson, Chairman of IBM, 1943
“Computers in the future may weigh no more than one and a half tons.”
Popular Mechanics, 1949
“There is no reason anyone would want a computer in their home.”
Ken Olson, President of DEC, 1977
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A World of Computers
Computer Use
Everywhere
Impact Virtually Everyone
Creation, Collection, Dissemination
Price/Power
Competition
Computer Literacy
Understanding of Computers and Their Uses
Technical Knowledge Not Required
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What is a Computer?
Definition
Electronic Machine
Controlled by Instructions in its Memory
Accepts Data
Raw Facts, Figures, & Symbols
Processes Data Into Information
Organized, Meaningful, and Useful
Produces & Stores Results
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What is a Computer?
Information Processing Cycle
Input — Accepts Data
Processing — Manipulate Data
Output — Produce Result
Storage — Store Result
Communication — Send Result to Others
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Hardware
Components & Equipment
Electronic
Mechanical
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Hardware
Input Devices
Used to Enter Data & Instructions
Keyboard
Mouse
Scanner
Digital Camera
Video Camera
Microphone
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Hardware
System UnitEnclosed in a Case
Contains Electronic Components
Connected to Motherboard
Processes DataMemory
Temporary Storage for Data & Instructions
Central Processing Unit (CPU)
Carries Out Instructions
Tells Computer What to Do
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Hardware
Output Devices
Conveys Information to User
Monitor
Printer
Speakers
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Hardware
Storage
Holds Data & Instructions for Future Use
Media
Physical Material
Device
Reads / Writes Data
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Hardware
Communications Devices
Send / Receive Data & Instructions
Establishes Connection Between Devices
Uses Telephone Lines, Cables, & Satellites
Modem
Converts Digital Signals to Analog & Vice Versa
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Hardware
Networks
Connected Computers / Devices
Share Resources
Hardware
Software
Data & Information
Save Time & Money
Internet
Millions of Computers Linked Worldwide
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Software
AKA Program
Series of Instructions
Tells Computer What to Do
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Software
Systems SoftwareControls Operations & Hardware
Operating System
Utility Programs
Application SoftwarePerforms Specific Tasks for Users
Word Processing
Spreadsheet
Database
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Platforms
Personal Computers
Desktops
PCs & Compatibles
Windows OS
Apple
Macintosh OS
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Platforms
Mobile Computers
Portable
Notebook
AKA Laptop
Tablet
Stylus, Annotation
Netbook
Smaller, WI-FI, No DVD
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Platforms
Mobile Devices
Smart Phone
Horizontal
Media Player
Digital Camera
Handheld
Vertical
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Platforms
Game Console
Video Games
Embedded
Component in Larger Product
Phone, Thermostat, Security, Airbag
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Platforms
Larger Systems
Servers
Networks
Mainframe
Supercomputer
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Platforms
Comparison
Platform Size Users PriceMicrocomputer (PC) Desk 1 < $5,000
Mobile Lap / Hand 1 < $5,000
Game Console Desk 1 – 2+ < $1,000
Embedded Miniature 1 Included in Item Price
Server Cabinet 2 – 1,000 $1,000 - $1,000,000
Mainframe Room 100 – 1,000+ $300,000 - $1,000,000+Sabre = 14000/s
Supercomputer Room 100 – 1,000+ $1,000,000 +Kasparov
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Industry Applications
EducationDistance Learning
FinanceOnline Banking & Investing, Tax Prep
Government911 Dispatching, Squad Notebooks
HealthcareElectronic Patient Records, PPID
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Industry Applications
ScienceCollect, Analyze, & Model Data
PublishingE-books, PDF Manuals, MP3s
TravelNavigation Systems, E-tickets
ManufacturingProduction, Inventory, Quality Control