Post on 31-Dec-2015
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UNIT 1: COMPUTER SOFTWARE
Cite Examples of System Software
1.1.1 Cite examples of system software 2
Definition—System Software
• Any computer software which manages
and controls computer hardware so that
application software can perform a task
1.1.1 Cite examples of system software 3
Microsoft Windows•1st introduced Nov.
1985
•Is a GUI (graphical user
interface)−Use a mouse to activate icons which represent files and programs
•2004 statistics showed
that Windows controlled
90% of market
1.1.1 Cite examples of system software 4
Microsoft Windows
• 3.0, 1990, 1st to achieve commercial
success
• 3.1, 1992, includes TrueType font
system (a set of highly legible fonts
already installed) and Minesweeper
1.1.1 Cite examples of system software 5
Microsoft Windows
• 95, 1995, within a year or two became
most successful operating system; 1st
to have start button & taskbar
• 98 SE, 1999, succeeded 98 because
riddled w/problems; improved USB;
much faster Internet Explorer 5.0;
plug-and-play capabilities
1.1.1 Cite examples of system software 6
Microsoft Windows
• XP, 2001, stands for eXPerience;
faster start-up; updated GUI
• Vista, 2007, upgraded features, start
menu w/search button to search for
programs or put commands
1.1.1 Cite examples of system software 7
Mac OS
•1st introduced in 1984
•A GUI
•Developed, marketed,
sold by Apple Inc.
•Latest version
preloaded on all Apple
computers
1.1.1 Cite examples of system software 8
Mac OS
• Emphasis on “digital lifestyle”
applications−iLife suite−Enhanced business applications (iWork)−Integrated home entertainment (Front
Row media center)
1.1.1 Cite examples of system software 9
Mac OS
• Multitasking & Memory protection−Improved system’s ability to run
multiple applications w/o them interrupting or damaging each other
1.1.1 Cite examples of system software 10
Linux
•Much of its basic
design comes from
principles
established in Unix
in the 70s and 80s
•Used mainly by
scientists and
programmers
UNIT 1
Cite Examples of Application
Software
1.2.1 Cite examples of application software
Definition—Application Software
• Employs the capabilities of a
computer directly and thoroughly to
a task that the user wishes to
perform
1.2.1 Cite examples of application software
Word processing
•A computer application used for the
production (composition, editing,
formatting, and printing) of any sort of
printable material
1.2.1 Cite examples of application software
Spreadsheet
•A computer application
that displays multiple
cells that make up a grid
of rows and columns−Each cell can contain alphanumeric or numeric values−Used for financial info because of ability to recalculate automatically after a change to a single cell
1.2.1 Cite examples of application software
Database
•Organizes the storage of data and enables
a person or program to pull out desired
information
1.2.1 Cite examples of application software
Presentation• A computer software package used to display
info, normally in form of a slide show
• Three major functions:1. Editor—allows text to be inserted and formatted2. Method of inserting/changing graphics3. Slide-show system to display the content
1.2.1 Cite examples of application software 17
Media Player
•Describes computer
software for playing
back multimedia
files
•Support an array of
media formats,
including both audio
& video files
UNIT 1Cite Examples of Utility Software
Describe Various Types
of Utility Software
1.3.1 Cite examples of utility software
1.3.2 Describe various types of utility software
Definition—Utility Software
• Specifically designed to help
manage and tune the computer
hardware, operating system or
application software, and perform a
single task or a small range of tasks
1.3.1 Cite examples of utility software
1.3.2 Describe various types of utility software
Disk Defragmenter
•Detects computer
files whose contents
have been stored on
the hard disk in
disjointed fragments
•Moves the fragments
together to increase
computer productivity
1.3.1 Cite examples of utility software
1.3.2 Describe various types of utility software
Disk Checker
•Scans the contents of a
hard disk to find files or
areas that are corrupted
in some way or were not
saved correctly
•Eliminates them to
make hard drive operate
better
1.3.1 Cite examples of utility software
1.3.2 Describe various types of utility software
Virus Scanners
•Scans for computer
viruses among files
and folders
1.3.1 Cite examples of utility software
1.3.2 Describe various types of utility software
Disk Cleaner
•Finds files that are
unnecessary to
computer operation or
take up considerable
amounts of space
•Helps the user to
decide what to delete
when their hard disk is
full