Using MIS 6e Chapter 4

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Nov 24, 2013 (3 years and 10 months ago)

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Hardware, Software,

and
Mobile
Systems

Chapter 4


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"... If We Don’t Have an iPad App, We
Don’t Have a Business."


GearUp not competitive without iPad app


Lack of knowledge could waste money and
time


Outsourcing to India? Open source?


What have others done?


Conflict between low cost and technical
competitiveness

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Study Questions

Q1: What do business professionals need to know about
computer hardware?

Q2: What do business professionals need to know about
software?

Q3: Is open source software a viable alternative?

Q4: What are the differences between native and thin
-
client
applications?

Q5: Why are mobile systems increasingly important?

Q6: What characterizes quality mobile user experiences?

Q7: What are the challenges of personal mobile devices at
work?

Q8: 2023?

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Q1:

What Do Business Professionals Need
to Know About Computer Hardware?

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Server farm

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Large
collection
of

coordinated
servers

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Computer Data

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Important Storage
-
Capacity Terminology

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Memory Swapping


When RAM too small to hold all open
programs and data


CPU loads program segments into free
memory


If none available, O/S swaps out existing
segment, to a disk and copies requested
segment to freed space


Swapping slows down computer


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Specifying Hardware with Computer
Data Sizes


CPU
speed expressed in
hertz


Slow =
1.5
GHz;
F
ast = 3
+
GHz


32
-
bit
or 64
-
bit


64
-
bit for 4+ GB memory


Processing large spreadsheets,
database
files, picture
, sound,
or movie files; using
many
large applications
at
same
time


C
ache
and main memory are
volatile

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Q2: What Do Business Professionals
Need to Know About Software?

Basic Categories of Computer Software

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What Are the Major Operating Systems?

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What Are the Major Operating Systems?
(cont'd)

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Windows 8 Metro Interface

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Virtualization


Host
operating
system


Runs
one or more operating systems as
applications


PC
virtualization


Personal
computer hosts several different operating
systems


Server
virtualization


Server
computer hosts other server
computers


Makes
cloud computing feasible


Virtual
desktop


Allows
access from any computer a user has
authorization to
use

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Virtualization: Windows Server
Computer Hosting Two Virtual Machines

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How Virtual Machine VM3 Appears to a
User

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Own Versus License

License


Right to use specified number of copies


Limits vendor’s liability

Site License


Flat fee to install software product on all
company computers or all computers at a
specific site

Open source software


Free usage license

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What Types of Applications Exist, and
How Do Organizations Obtain Them?

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What Is Firmware?

Computer software installed on read
-
only
memory


Printers, print servers, communication
devices


Coded like other software


Can be changed and upgraded


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Using MIS InClass 4: Place Your Bets
Now!


Three
-
way race for market share


Apple,
Google, Microsoft


Merging software, hardware, personal
communication devices, movies, etc.


All have deep technical staff, knowledge,
patents, and plenty of money


Who will win?

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Three
-
way Comparison


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Q3:

Is Open Source Software a Viable
Alternative?

GNL


G
eneral
P
ublic
L
icense


Standard
for open source
software


Successful open source
projects


Open
Office


Firefox


MySQL


Apache


Ubuntu


Android


Cassandra


Hadoop

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Some Terms


Open source


source available to public


Source code


computer code written by humans
and understandable by humans


Machine code


11010010100101111110011101111001000111....


Closed source code


highly protected and only
available to trusted employees and carefully vetted
contractors

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Why Do Programmers Volunteer Their
Services?


It’s fun


Freedom to choose projects


Exercise creativity on interesting and
fulfilling projects


Exhibit one’s skill to get a job


Start a business selling services

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How Does Open Source Work?


Collaboration of many programmers


E
xamines source code and identifies a
need, creates new feature or redesigns
existing feature, or fixes a problem


Code evaluated and extended by others


Iteration, peer reviews
and
well
-
managed
project
yield high
-
quality
code


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Source Code Sample


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Is Open Source Viable?


Depends on requirements and constraints
of
situation



Free” open source
software require support
and operational
costs, could
cost more than
licensing fee


Future
will
involve
blend of both proprietary
and
open source software


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Q4: What Are the Differences Between
Native and Thin
-
client Applications?

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Developing Thin
-
client Applications


Browser handles idiosyncrasies of operating
system and underlying hardware


Applications
written by professional
programmers, technically oriented web
developers, or business professionals


Cheaper
to develop


Limited by
capabilities of the browser


Thin
-
client
applications via
Web go
to
www.picozu.com/editor

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One Consequence of Browser
Differences for Thin
-
Client Applications

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Which Is Better?


Depends:


Strategy, goals, application requirements,
budget, schedule, tolerance for managing
technical projects, need for application
revenue, etc.


Thin
-
client applications cheaper to
develop and maintain, but may lack wow
factor

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Ethics Guide:
“Because It’s Where the
Money Is . . .”


Hackers target where money is


Windows targeted more than Mac


Malware: Viruses, Trojan horses, Spyware,
Adware


Apple better get ready for avalanche of
attacks.

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Q5: Why Are Mobile Systems
Increasingly Important?

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Elements of a Mobile Information
System

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Q6: What Characterizes Quality Mobile
User Experiences?

Primary
characteristics of
quality mobile applications


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Chrome
-
less Mobile Windows Store
Application

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Example of Application Scaling


Example of IE10 Charm Scaling

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Example Use of Web Page Data
Declared as Shared

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Mobile Systems Cloud Use

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Kindle Fire Roaming Message

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Q7: What Are the Challenges of

Personal Mobile Devices at Work?

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Six Common BYOD Policies

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Advantages of Example BYOD Policies

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Q8: 2023?


Can Microsoft take Office
365 to
mobile market
via its Skype acquisition?


PC
mules rare


Large
-
screen computing/connectivity devices
available everywhere


Use public device to
connect to cloud


Won’t need desktop office applications


Cost performance issues of desktop
virtualization will be gone

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Ethics Guide: Churn and Burn

C
onspiracy among
hardware and software
vendors?


Hardware
vendors create
new, faster computers


Software vendors create
new products
with more
features
only needed by some
users


Time
-
consuming to
learn

Churning

1.
New software needs new hardware to run.

2.
New hardware becomes obsolete fast.

3.
Repeat steps 1 and 2.


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Ethics Guide: Churn and Burn (cont’d)


Products have defects


Vendors turn these into a sales advantage


Should users accept these problems?


Should they rise up in protest?


What should vendors do?

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Guide: Keeping Up to Speed


Relentless pace of technology
change


21
st

century business professional cannot bury
head in sand


U
se knowledge of
IT to
gain competitive advantage


Don’t
ignore
technology


Read articles, technology ads, attend
seminars, workshops


Get
involved as
user representative in
technology
committees

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Guide: Questioning Your Questions


L
earn
how
to
discern
judgment
quality and
evaluate answers.


Most
difficult and creative tasks are generating
questions
and
formulating
strategy for getting
answers.


Be
able to ask good questions
and
obtain
good
answers.


Learn
about new IS alternatives and how
to
apply them.


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Guide: Questioning Your Questions

Questions can be bad in three ways:

1.
Irrelevant: Answer won’t tell you why

2.
Dead
: Provide
no insight into subject

3.
Asked wrong
source


Don’t ask “What is it?” questions of
valuable or expensive sources.


Ask: “How can I use it? Is it the best
choice for our company or situation?”


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Active Review

Q1: What do business professionals need to know about computer
hardware?

Q2: What do business professionals need to know about
software?

Q3: Is open source software a viable alternative?

Q4: What are the differences between native and thin
-
client
applications?

Q5: Why are mobile systems increasingly important?

Q6: What characterizes quality mobile user experiences?

Q7: What are the challenges of personal mobile devices at work?

Q8: 2023?

Copyright © 2014 Pearson Education, Inc. Publishing as Prentice Hall


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Case Study 4: The Apple of Your i


Tripled market share in three years


Second largest public company in world


Pioneered well
-
engineered home computers
and innovative interfaces for students and
knowledge workers


Every sales success feeds other sales
successes

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Case Study 4: The Apple of Your i
(cont’d)

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