Download 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
2
Objectives
Define Database Management
Software
Define Graphics Software
Define Business and Science
Software
Define Entertainment and
Education Software
Understand Licenses and
Copyrights
3
Software Categories
Application Software
System Software
4
System Software
Operating
Systems
Device
Drivers
Utilities
Programming
Languages
DOS
Windows
Mac OS
Linux
UNIX
5
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)
9
Document Production Software
Use to compose, edit,
design, print or
electronically publish
documents
Types
– Word processing (Word)
– Desktop publishing
(PageMaker)
– Web authoring (Front Page)
10
Document Production Elements
Formatting
Page Layout
Headers/Footers
Clipart
Tables
Frames
Spell check
Word wrap
Margins
Styles
11
Spreadsheet Software
Use for numerical calculations and
graphs
Rows and columns
Worksheet, cell, cell references
Cells can contain
90
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Values
Labels
Functions
Formulas
80
70
60
50
40
30
20
10
0
1st Qtr
2nd Qtr
3rd Qtr
4th Qtr
12
Spreadsheet Software
Formulas vs. functions
Relative vs. absolute cell
referencing
Automatic recalculation
Templates
What-if analysis
Not always best for business
13
Data Management Software
Use to store, find, organize, update
and report information
Database: collection of related files
Records and fields
14
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
15
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
17
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
18
Science Software
Statistical/graphing software
Mathematical modeling software
– Math CAD
19
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
20
Entertainment Software
Audio editing (sound recorder)
Music
•Ear
MP3 player
Games
training
•Notation
•Computer-aided music
•MIDI sequencing
Video editing (Adobe Premiere)
21
Educational Software
Learn and practice new skills
– Arithmetic
– Reading
– Languages
– Typing
– SAT
Reference software (CD-ROMs)
22
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
23
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
24
Types of Licenses
Single-user
Site license
Multiple-user
Concurrent-user
25
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
26
Issue
Is Privacy
a Problem?
27
Computer Software
End
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