1. C31102 IT 2 Computer Center Pluakdaengpittayakom
Software
C31102 IT 2
Computer Center
Pluakdaengpittayakom

2. Meaning of Software
Software is group of commands created from programming language

3. Need of software
Software help human can control computer and make profit from it.

4. Programming Language Media between computer and human
Computer can understand only binary number or machine language

5. Programming Language(cont)
Machine language is hard to understand then language translator be created for translate high-level language to machine language
Language translator divide 2 types 1) Compiler and 2) interpreter

6. Compiler vs Interpreter
Compiler will check all code before translate to program
Interpreter will translate one statement and run it

7. Type of software We can divide software to 2 types System software
Application software

8. System software
Control hardware such as get data from keyboard, send data to monitor, etc.
start working when computer will be turned on.

9. Function of system software
Manage Input and Output
Manage Memory
Coordinate between Hardware and Application software

10. Subtype of System software
System software also divide to 2 subtype
Operating System : OS
Compiler

11. Operating System : OS
Low level software that used for maintenance Hardware
All computer must install OS

12. Example of OS
DOS : Disk Operating System work in command line mode
Windows : work in graphic mode, multitask mode, easy to use

13. Example of OS
OS/2 like Windows, built by IBM, few difference about command
Linux , Freeware OS, Multi user platfrom

14. Language Translator Used for translate source code to machine language
Help programmer can program easier

15. Example of Programming language
PASCAL : structure programming language
BASIC : easy command
C : flexible & HW friendly programming language
LOGO : child learning language
FORTRAN, COBOL, RPG ,etc

16. Application Software
Software work on specific task can divide in 2 type
Ready-made software
Specific-task software

17. Ready-made software Built to buy more Like deli
Example of Ready-made software such as word processing, spread sheet, database management, presentation, data communication
Low price but not fitness

18. Word processing software
Use for create, edit, format and print document
Such as Microsoft Word, Lotus Ami-Pro etc.

19. Spread Sheet Software
Use for calculating, define formula and processing
Such as Microsoft Exel, Lotus.

20. Database Management Software
Use for create, manage, query and make summary report on various format.
Such as Microsoft Access, DB2, Oracle, Foxbase, etc.

21. Presentation Software
Use for create presentation in various format
Such as Microsoft Powerpoint, Lotus Freelance, Harward Graphic, etc.

22. Data communication software
Make computers can communicate
Such as Internet Explorer, ProCom, CrossTalk, Telix, etc.

23. Specific-task software
Make by order
Like command food.
Such as 7-11 Account program, PIS
High cost but fitness.

24. Summation
Software
System
Apply OS
Translator
Ready-made
Specific Task