1. Course: Introduction to Computers
Lecture: 4 Software

2. Introduction Program:
Set of sequence instruction that tell the computer what to do.
Software:
A collection of programs, data, and information.
Programmer:
The person who makes the program.

3. (Application Software)
Computer Software
(Computer Software)
(System Software)
(Application Software)

4. System Software (System Software)
It is the software which is used by the computer or operates a computer system.
Built inside the computer or in a CD must be bought.
(System Software)
(Programming language)
(Compiler And Interpreters)
(Operating Systems)

5. Programming language
Programs are developed by the programming languages.
It is a set of words, rules, syntax.
There are many programming languages each to solve specific kinds of problems.
Ex. ( C, Java, Pascal, …etc).

6. Programming language Generations of Programming Languages:
Machine Language.
Assembly Language.
High Level Language.
Application Generation.
Object Oriented Languages.

7. Programming language Generations of Programming Languages:
1.Machine Language:
It is written in 1, 0 (Binary system).
Difficult language.
Need long time.
Depends on the computer architecture.

8. Programming language Generations of Programming Languages:
2.Assembly Language:
Easier than the machine language.
Depends on the computer architecture.
A translator is needed and it is called (Assembler).

9. Programming language Generations of Programming Languages:
3.High Level Language:
It needs translators.
It can be used very easily to solve complex problems.
They are undependable of the computer’s architecture.
Ex. Python , C , Java

10. Programming language Generations of Programming Languages:
4.Application Generations:
Database language used to create files, forms, queries and reports without the writing of any programs.
Ex. Oracle, Access.

11. Programming language Generations of Programming Languages:
5.Object Oriented Languages:
Consist of a collection of objects.

12. System Software (System Software) (Programming language)
(Compiler And Interpreters)
(Operating Systems)

13. Compiler And Interpreters
Compilers and Interpreters: Program that translate the source code into object code.
Compilers: translate a whole program once and execute it.
Interpreters: translate and execute one instruction at a time. Its slower and use more space than the compiler.

14. Operating System Functions
Booting up.
User Interface.
Task and resources management.
Monitoring.
File Management.
System security.

15. Operating System Type
Multitasking OS: execute more than one task at the same time.
Multiprocessing OS: uses more than one CPU.
Timesharing OS: time is shared between multi-user to execute their task.
Network OS
Real Time OS: Input and output operations are happing at the same time (medical devices).

16. (Application Software)
Computer Software
(Computer Software)
(System Software)
(Application Software)

17. Specialized applications For specific, advanced tasks
Application Software
Application software is a software used by user
Two categories
Basic applications
general-purpose
Specialized applications
For specific, advanced tasks

18. Basic Application
Focus on basic and general-purpose tasks

19. Specialized Applications
Focus on specific disciplines and occupations
Make it possible to perform advanced tasks at home
Examples:
Graphics Programs
Audio and Video Editing Software
Multimedia Creation Programs
Web Designing Programs

20. Examples

21. Computer Parts
O.S
Application Software
User

22. Interfaces
Interface: It’s the way that the user use to deal (communicate) with the computer.
Type:
Command Line Interface:
Commands must be typed on the keyboard.
It’s slow process.
Require a high degree of computer knowledge.
Graphical User Interface:
Use pictures, windows, menus, icons to represent object and operation.
User can select any object by pointing the mouse at it an click on it.
Ease, enjoyable.