Transcript Unit C: Computer Software

Computer Software
Unit C
1
Objectives
Introduce Computer Software
Explain How Computers Interpret
Software
Define Document Production
Software
Define Spreadsheet Software
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Objectives
Define Database Management
Software
Define Graphics Software
Define Business and Science
Software
Define Entertainment and
Education Software
Understand Licenses and
Copyrights
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Software Categories
Application Software
System Software
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System Software
Operating
Systems
Device
Drivers
Utilities
Programming
Languages
DOS
Windows
Mac OS
Linux
UNIX
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Application Software
Document
Production
Reference
Statistical
Spreadsheet
Software
Mathematical
Modeling
Entertainment
Data
Management
Accounting
& Finance
Music
Video
Educational
Graphics
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Software Topics
Computer program
– main executable program (.exe)
Support module
– called by the program (.dll)
Data module
– Example: a dictionary file or a file that is
not supplied by the user
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How Computers Interpret
Software
Computer programmers write
instructions for programs
Most businesses purchase
software instead of writing their
own
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How Computers Interpret
Software
Computer languages
– Source code
– High-level languages: COBOL, C++, Java
Machine language
Compiler
– Creates object code in single batch
Interpreter
– Converts one instruction at a time
– Common with web-based scripts (part of web
page)
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Document Production Software
Use to compose, edit,
design, print or
electronically publish
documents
Types
– Word processing (Word)
– Desktop publishing
(PageMaker)
– Web authoring (Front Page)
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Document Production Elements
Formatting
Page Layout
Headers/Footers
Clipart
Tables
Frames
Spell check
Word wrap
Margins
Styles
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Spreadsheet Software
Use for numerical calculations and
graphs
Rows and columns
Worksheet, cell, cell references
Cells can contain
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Values
Labels
Functions
Formulas
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60
50
40
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10
0
1st Qtr
2nd Qtr
3rd Qtr
4th Qtr
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Spreadsheet Software
Formulas vs. functions
Relative vs. absolute cell
referencing
Automatic recalculation
Templates
What-if analysis
Not always best for business
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Data Management Software
Use to store, find, organize, update
and report information
Database: collection of related files
Records and fields
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Data Management Software
Using database software you can:
– Import and export data
– Query records in a particular field
• SQL (Structured Query Language)
• Natural query language
• Query by example (QBE)
– Print reports
Always use information appropriately
– Data integrity
– Privacy
– Copyright
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Graphics Software
Use to create, display, modify,
manipulate and print graphics
Paint software: realistic art and
photos
Photo Editing software: simplifies
common editing tasks
Drawing software: uses vector figures
& shapes to create “cartoon-like”
images.
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Graphics Software
3-D Graphics software:
create wireframes and then
cover with a texture
CAD (computer-aided
design): 3-D software
designed for architects and
engineers
Presentation software:
creates electronic slides like
these
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Business Software
Accounting & Finance
– Personal finance
– Tax preparation
– Small business accounting
Vertical Market
– Hospitals, construction, schools
Horizontal Market
– Generic like payroll
– Project management
Groupware
– Help collaboration on group projects
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Science Software
Statistical/graphing software
Mathematical modeling software
– Math CAD
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Software Suites
A collection of application
software sold in a package
– Microsoft Office, Star Office, Open
Office, WordPerfect Office
Available for productivity,
antivirus, and graphics
Cost and usability
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Entertainment Software
Audio editing (sound recorder)
Music
•Ear
MP3 player
Games
training
•Notation
•Computer-aided music
•MIDI sequencing
Video editing (Adobe Premiere)
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Educational Software
Learn and practice new skills
– Arithmetic
– Reading
– Languages
– Typing
– SAT
Reference software (CD-ROMs)
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License vs. Copyright
Software License: a legal contract
that defines the ways in which you
may use a computer program.
Copyright: a form of legal protection
that grants the author of an original
work an exclusive right to copy,
distribute, sell and modify that work.
Software piracy
For contract to take effect:
– Open a shrink-wrap license product
– Agree to an installation agreement
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Types of Copyright Protections
Commercial: License adheres to
limitations of copyright law
Shareware: try before you buy on
the honor system
Freeware: no fee - can use, but not
alter or sell
Open Source: uncompiled source
code that can be changed - sold or
free
Public Domain: can be copied,
altered and resold
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Types of Licenses
Single-user
Site license
Multiple-user
Concurrent-user
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Tech Talk: Installing Software
System requirements
– Operating system and minimum hardware
capacities
Steps (setup.exe)
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Copy files to hard drive
Uncompress if necessary (Win Zip)
Verify system requirements met
Select appropriate device drivers
Necessary system files/players (Media Player)
Update registry and program menu
Uninstall routine or Windows
Add/Remove programs
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Issue
Is Privacy
a Problem?
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Computer Software
End
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