Chapter 1 Information Technology: Principles, Practices, and

advertisement
CSIS-116: Survey of Information
Technology
• Today’s Agenda
– Getting to know each other
– Overview course
• Also
– Chapter 1
1
CSIS-116: Survey of Information
Technology
• Who am I?
– Dr. Eric Breimer
• 2 years at Siena
• Ph.D. RPI
• Research Area:
– Experimental Algorithms
– Machine Learning
– Bioinformatics
http://www.ratemyprofessors.com/ShowRatings.jsp?tid=83848
2
CSIS-116: Survey of Information
Technology
• Who are you?
3
CSIS-116: Survey of Information
Technology
• Course Website
– I will post almost everything.
• Syllabus
– Coming to lecture is very important
– Don’t cheat
– Don’t miss exam dates
4
CSIS-116: Survey of Information
Technology
• Labs
– 10 Labs worth 25 point of your grade
– Lab 1 this week is an intro lab.
• worth 1 point
– Remaining 9 labs
• worth 3 points each
• 2 points for in-lab exercise
• 1 point for take-home exercise
– 28 points total
5
CSIS-116: Survey of Information
Technology
• Projects
– 3 projects worth 25 points of your grade
• Project 1 – Research Report
• Project 2 – Website
• Project 3 – Group Project w/ Presentation
6
CSIS-116: Survey of Information
Technology
• Exams
– Exam 1 worth 15 points
– Exam 2 worth 15 points
– Final worth 20 points
7
CSIS-116: Survey of Information
Technology
• Final Grade
– 10 labs  25 points
– 3 project  25 points
– 3 exams  50 points
• Cut-offs
A  92 average 90 on final
A-  89 average
B+  87 average
B  82 average
B-  79 average
8
CSIS-116: Survey of Information
Technology
• Tricks of this course
– In lecture, I will elaborate on topics
not covered in the book
• Then, I will test you on them
– Exams questions will ask you about
concepts learned in lab
– Projects are graded superficially
• The better it looks the better grade
you’ll get
9
Chapter 1
Information Technology:
Principles, Practices, and
Opportunities
10
Chapter 1 Highlights
• Mostly List to Memorize
– 6 characteristics of the Information Age.
– 3 primary components of information
technology.
– 6 information-handling functions.
– 4 benefits of information technology.
– 14 areas where information technology
touches us
– 3 responsibilities
11
The Evolution of the Information Age
• Agricultural Age: The period up to the 1800s,
when the majority of workers were farmers whose
lives revolved around agriculture.
• Industrial Age: The period from the 1800s to 1957,
when work processes were simplified through
mechanization and automation.
• Information Age: The period that began in 1957, in
which the majority of workers are involved in the
creation, distribution, and application of
information.
12
The Evolution of the Information Age
13
Six Characteristics of the
Information Age
1. An information-based society has arisen.
– duh?
2. Businesses depend on information technology to
get their work done.
– Could you imagine if E-bay’s computer
systems went down?
3. Work processes are being transformed to
increase productivity.
– UPS is the classic model company
14
Six Characteristics of the
Information Age
4. Information technology provides the means to
rethink/recreate/reengineer conventional
business processes.
– Amazon.com: PublishersUPSCustomers
5. Success in business is largely determined by the
effectiveness with which information technology
is used.
– Prentiss Hall vs. Addison Wesley
6. Information technology is embedded in many
products and services.
– Soon it’ll be embedded in all products and
service
15
Buzzword Definitions
• Reengineering:
– The reshaping of business processes to remove
barriers that prohibit an organization from providing
better products and services and to help the
organization capitalize on its strengths.
• Business Processes:
– Collections of activities, often spanning several
departments, that take one or more kinds of input
and create a result that is of value to a company’s
customers.
• Effectiveness:
– The extent to which desirable results are achieved.
16
Characteristics of the
Information Age
17
Characteristics of the
Information Age
• Reengineering efforts to attain greater
productivity:
– Industrial Age
• Division of Labor: Separation of work
process into component task, with different
workers specializing in each of the tasks.
– Information Age
• Teamwork, Interconnection, and Shared
Information.
18
Characteristics of the
Information Age
Information Technology
•
•
Definition of Information Technology
– A term used to refer to a wide variety of
items and abilities used in the creation,
storage, and dispersal of data and
information.
Three main components
1. computers
2. communications networks
3. know-how.
20
Information Technology
• Data
– Raw facts, figures, and details.
• Information
– An organized, meaningful, and useful
interpretation of data.
• Knowledge
– An awareness and understanding of a set of
information and how that information can be
put to the best use.
21
Information Technology
Computers
• In the old days, computers come in four sizes:
– Microcomputers
• now called PCs
– Midrange computers
• Sometimes called servers
– Mainframes
• Still have some limited use
– Supercomputers
• Died in the 90’s
23
Computers
• Microcomputers (called PCs)
– Desktop Computers
– Laptop Computers
– Handheld Computers
• Tablet PCs
• Personal Digital Assistants
• Palm PCs
24
Computers
• Midrange computers (called Servers)
• Faster processor than a PC
• More memory
• More disk space
• Sometimes built for racks
– But, very modern PCs can be faster and better
than older servers.
– Sometimes PCs are used as Servers
– And Servers can be used as PCs
25
Computers
• Midrange computers (called Servers)
– What really distinguishes a Server from a PC?
– This is why they usually have to be faster and
better than your average PC
26
Computers
• Mainframes:
– Monopolize by IBM through out the 70’s 80’s
and 90’s
– Some are still used today
– Characterized by quality hardware which
makes for a very reliable computer
– Fault-tolerant
– They rarely crash
– Expensive
– Not particularly fast
27
Computers
Supercomputers:
– The most powerful of all computers
– designed to solve problems consisting of long
and difficult calculations
– Heavily used for computer graphics in
simulations and movies from the 80’s
– Way too expensive
– Replaced by more cost effective Server
clusters or PC clusters
28
Information Systems
• System
– A set of components that interact to
accomplish a purpose.
• A business information system
– designed to produce the information needed
for successful management of a structured
problem, process, department, or business.
29
Information Systems
Communications Networks
• Definition
– A set of locations, or nodes, consisting of
hardware, programs, and information linked
together as a system that transmits and
receives data and information.
• Includes
– Physical Hardware
• Wires, Hubs, Routers, Network Cards, etc.
– Connected Computers
– Software that makes it run
– Available information
31
Know-How
• The capability to do something well.
• Information technology know-how consists of:
– Familiarity with the tools of IT; including the
Internet
– Possession of the skills needed to use these
tools
– An understanding of when to use IT to solve
a problem or create an opportunity
32
Six Functions of
Information Technology
33
Six Functions of
Information Technology
1. Capture:
– The process of compiling detailed records
of activities.
2. Processing:
– Data Processing, Word Processing, Image
Processing, Voice Processing
3. Generation:
– The process of organizing information into
a useful form, whether as numbers, text,
sound, or visual image.
34
Six Functions of
Information Technology
4. Storage:
– computer process of retaining information
for future use.
5. Retrieval:
– Retrieval is the process by which a
computer locates and copies stored data
or information for further processing or for
transmission to another user.
6. Transmission:
– The computer process of distributing
information over a communications
network.
35
Four Benefits of
Information Technology
36
Opportunities of
Information Technology
• Helping People
• Solving Problems
– Problem: A perceived difference between an
existing condition and a desired condition.
– Problem Solving: The process of recognizing a
problem, identifying alternatives for solving it,
and successfully implementing the chosen
solution.
37
Information Technology Is All Around Us,
“Messing Up our Lives”
•
•
•
•
•
•
•
Television
Education
Training
Entertainment
Shipping
Paperwork
Money and Investments
•
•
•
•
•
•
•
Agriculture
Taxation and Accounting
Health and Medicine
Manufacturing
Journalism
Energy
Sports
38
Responsibilities of Using
Information Technology
• To be Informed
• To Make Proper Use of IT
• To Safeguard
39
Download