1. Computer Software

2. Objectives
Describe the software components of a typical software package
Describe the way an operating system manages each computer resource
Describe key features of popular software
List types of software available
Explain how to install and uninstall software
Describe rights associated with software: for users and programmers
9/16/2018
M. Eyadat

3. Software
Software is the instructions and associated data, stored in electronic format, that direct the computer to accomplish a task.
Software includes
A computer program is a set of detailed, step-by-step instructions that tells a computer how to solve a problem or carry out a task
Main executable file
Support module
Data module
9/16/2018
M. Eyadat

4. Programmers and Computer Languages
Computer programmers write the instructions for the computer programs
Software publishers distribute the software, they specialize in packaging, marketing, and selling commercial software
A computer language provides the tools that a programmer uses to create software
Source code
High-level languages
9/16/2018
M. Eyadat

5. Programmers and Computer Languages
A compiler translates all of the instructions in a program as a single batch
The resulting machine language instructions are called the object code
An alternative to a compiler is an interpreter, that converts one instruction at a time while program is running
Scripts
JavaScript
VBScript
9/16/2018
M. Eyadat

6. software Types
Software is categorized as either application software or system software
Application software is designed to be used for a purpose such as drawing designs, creating documents, etc.
System software is designed to help the computer carry out the basic operating functions
Operating systems, utilities, and drivers
9/16/2018
M. Eyadat

7. Operating System
An operating system (OS) is the master controller for all of the activities that take place within a computer.
Microsoft Windows XP, Mac OS, Linux, UNIX
The operating system also interacts with the next functional layer called application software.
An operating system manages resources (any component that is required to perform work)
9/16/2018
M. Eyadat

8. OS manage processor resources
It ensures the microprocessor doesn’t spin its wheels waiting for input while it could be working on other processing tasks
Ideally, the OS is able to help the microprocessor switch tasks so that everything seems to be happening at the same time
The OS also must ensure that the microprocessor does sit idle
9/16/2018
M. Eyadat

9. OS keep track of storage resources
The OS acts as a filing clerk
It remembers the names and locations of all your files and keeps track of empty spaces where new files can be stored
OS controls peripherals to ensure input and output proceeds in an orderly fashion
9/16/2018
M. Eyadat

10. User Interface
A user interface can be defined as the combination of hardware and software that helps people and computers communicate with each other
Graphical user interface (GUI)
Command-line user interface
9/16/2018
M. Eyadat

11. Where is the operating system?
The OS’s small bootstrap program resides in ROM and provides the instructions to load the core parts into memory when system boots
This component is called the kernel
9/16/2018
M. Eyadat

12. Operating System Types
Single-user operating system
Multi-user operating system
Network operating system
Multitasking operating system
Desktop operating system
Windows,
Mac OS,
Linux,
Unix, and
DOS
9/16/2018
M. Eyadat

13. Application Software
Word processing software is used for producing reports, letters, papers, and manuscripts.
Desktop publishing software helps you use graphic design techniques to enhance the format and appearance of a document.
Web authorizing software helps you design and develop customized Web pages
9/16/2018
M. Eyadat

14. Application Software
Accounting and Finance, Mathematical Modeling, and Statistical Software
Accounting and finance software
Personal finance software
Tax preparation software
Small business accounting software
Statistical software
Mathematical modeling software
9/16/2018
M. Eyadat

15. Application Software
Data management software helps you to store, find, organize, update, and report information
File management software
Database management software
Graphics Software: a software you do need to work with drawings, photos, and other pictures?
9/16/2018
M. Eyadat

16. Application Software
Graphics – refers to any picture, drawing, sketch, photograph, image or icon that appears on your computer screen
Graphics Software
Paint software
Photo editing software
Drawing software
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M. Eyadat

17. Application Software Music Software
Audio editing software – lets you make your own digital voice and music recording
MP3
MP3 Player
CD ripper
MP3 encoding software
Ear training software
Notation software
Computer-aided software
Midi sequencing software
9/16/2018
M. Eyadat

18. Application Software Video Editing Software
Video editing software provides a set of tools for transferring video footage, editing video, adding special effects, and adding a sound track
Educational and Reference Software
Educational software – helps you to learn and practice new skills
MindTwister Math
3-D Froggy Phonics
SAT
GMAT
LSAT
9/16/2018
M. Eyadat

19. Application Software
Reference software – provides you with a collection of information and a way to access that information
Encyclopedias
Microsoft Encarta
Grolier’s encyclopedia
Comptons encyclopedia
World Book
Britannica
Dictionaries
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20. Application Software Entertainment Software Computer games
Role-playing games
Action games
Adventure games
Puzzle games
Simulation games
Sports games
Strategy games
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21. Application Software Business Software Vertical market software
Horizontal market software
Payroll software
Accounting software
Project management software
Groupware
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M. Eyadat

22. Why is it necessary to install software?
When you install software, the new software files are placed in the appropriate folders on your computer’s hard disk
Copy files from distribution disk
Uncompress files
Analyze computer’s resources
Analyze hardware components and peripheral devices
Look for any system files and players
Update necessary system files
9/16/2018
M. Eyadat

23. Software Installation Issues
A setup program guides you through the installation process
Following the program will make installation easy
Sometimes files are zipped, so they must be unzipped
Other types
Self-installing software
Self-executing zip file
Manual download and install
9/16/2018
M. Eyadat

24. Uninstall routine deletes the software’s files
A copyright is a form of legal protection
Purchaser has right to copy software to a computer’s hard disk in order to install it
Purchaser can make a backup copy
Purchaser is allowed to copy and distribute sections of a software program for use in critical reviews and teaching
Most software displays a copyright notice
A software license is a legal contract that defines the ways in which you may use a computer program
A shrink-wrap license goes into effect as soon as you open the packaging
9/16/2018
M. Eyadat