What is Computer Software?

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Transcript What is Computer Software? 

What is
Computer
Software?
Hardware vs Software
Got to have both to get the job done!
How does Software Work?
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Computer Algorithms
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Step by step directions
telling computer what to
do
Software development
First programmer –
Grace Hooper – created
FLOW MATIC (later
known as – COBOL)
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Programming language
that was close to English
Applications Software
 Programs
designed to
make users more
productive
 Assist with personal
tasks
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Word
PowerPoint
Media Player
 Variety
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of uses:
Business
Graphics and
Multimedia
Home/Personal/
Educational
Communications
Systems Software
 Interface
between the user, the application
software, and the computer’s hardware
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Examples:
 Operating
systems
 Utilities (diagnostics, servers)
 Language translators
Operating Systems
 Helps
user communicate with computer
 Uses a desktop to provide on-screen work area (graphical
user interface)
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Windows
Linux
Mac-OS
DOS
Networking Operating System
 Two
or more computers to be connected
Utility Software
 Helps
perform housekeeping chores
 Tasks include:
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Antivirus programs
Copy file from hard drive to another location
Convert graphics file to be used in another
program
Backup copy of hard drive (image, ghost)
CD/DVD Burning
Do you know what this is?
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0
Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1transitional.dtd"><html lang="en" xml:lang="en"
xmlns="http://www.w3.org/1999/xhtml"><head><meta
content="text/html; charset=utf-8" http-equiv="content-type"
/><script type="text/javascript">//<![CDATA[si_ST=new Date
//]]></script><script type="text/javascript">//<![CDATA[
Language Translators
 Convert
English code, to computer instructions
 Helps computer process data
I don’t
understand! I
need a
translator.
User Interfaces
 What
you see, touch, click
 Part we interact with when using the computer
 “User friendly”
 Command-line interface such as DOS (not used
frequently)
 Graphical interfaces such as Windows
What ‘OLD’ Apples looked like
Command Line
 Early
computers used only this
 Have to memorize codes
 Not very user friendly
 Not colorful – usually written in black and white
 No pictures
DOS
 Command
line
operating
system
 Memorize
commands
Graphical User interfaces
 Came
about with menus
 Graphical user interface (GUI)
 Apple’s development of Macintosh Finder
 Pictures (icons) represent software
 Colorful
 Reason for explosion of computer use (after
DOS scared people)
Vista Operating System
Windows 95, 98, XP, Vista, 7, 8
Mac Operating System - Leopard
Kodiak, Cheetah, Puma, Jaguar, Panther,
Tiger, Leopard, Snow Leopard, Lion, Mountain Lion
Assignment
 Computer
Specs that Matter – link on calendar