Lecture 1 - Introduction to Computers.pdf
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Transcript of Lecture 1 - Introduction to Computers.pdf
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8/16/2019 Lecture 1 - Introduction to Computers.pdf
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Concepts of Information Systems
Chapter 1
Compu t ing Ess ent ials 2015 by O'Leary
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Overview
Explain Information System PartsDistinguish Software Types
Define Application Types
Identify Computer Types
Describe Different Types of Hardware
Describe Different File Types
Explain Computer Connectivity
Explain the Internet
Explain Cloud Computing
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Introduction
Notable Technology Prognostications
“I think there is a world market for maybe fivecomputers.”
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 acomputer in their home.”
Ken Olson, President of DEC, 1977
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Introduction
Computer Use
Everywhere
Impact Virtually Everyone
Creation, Collection, Dissemination
Price/Power
Competition
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Introduction
Computer Competency
Popular Application Packages
Internet
Parts of an Information System
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Information Systems
People
AKA End Users
Procedures
Guidelines for Hardware & Software Use
Software
Step-by-step Instructions for Computer
Hardware
Processes Data to Create Information
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Information Systems
DataRaw, Unprocessed Facts
Connectivity
Share Information with Other Users
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People
Most Important Part of System
Uses
Business
Education
Entertainment
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Software
AKA Program
Series of Instructions
Tells Computer What to Do
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Software
Systems SoftwareOperates in “Background”
Manages Computer Internal Resources
Operating System
Coordinates Resources
Provides User Interface (UI)
Runs Applications
Utilities
Device Drivers
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Software
Application Software
Performs Tasks for End Users
General Purpose
Specialized
Focused on Specific Occupations
Mobile
Designed for Smartphones, Tablets
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Hardware
Computer Types
Supercomputer
Most Powerful
Mainframe
Accommodates Thousands of Users
Servers
Networked Environments
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Hardware
Computer Types
PCs (Microcomputers)
Most Widely Used
Desktop
Notebook
Tablet
Handheld
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Hardware
Platform Comparison
Platform Size Users Price
Microcomputer (PC) Desk 1 < $3,000
Mobile Lap / Hand 1 < $3,000
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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Hardware
Microcomputer Hardware
Secondary Storage
Hard Disk
USB
Communication
Modem
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Data
Raw, Unprocessed Facts
Text
Numbers
Images
Sounds
Stored Electronically in Files
Used as Input for System Unit
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Connectivity
Sharing Info with Other ComputersWireless Revolution
Network
Communications System
Connects Two or More Computers
Internet
Web
Multimedia Interface to Internet Resources
Cloud Computing
Shift Activities from User's Computer to Internet
Compu t ing Ess ent ials 2015 by O'Leary