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Module1 Introduction to Computer and Programming

Module1 Introduction to Computer and Programming. อภิรักษ์ จันทร์สร้าง Aphirak Jansang aphirak.j@ku.ac.th http://www.cpe.ku.ac.th/~aphirak Computer Engineering Department Kasetsart University, Bangkok THAILAND. Outline. Introduction to Computer How to run program? Programming Languages.

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Module1 Introduction to Computer and Programming

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  1. Module1Introduction to Computer and Programming อภิรักษ์ จันทร์สร้างAphirak Jansang aphirak.j@ku.ac.th http://www.cpe.ku.ac.th/~aphirak Computer Engineering Department Kasetsart University, Bangkok THAILAND

  2. Outline • Introduction to Computer • How to run program? • Programming Languages

  3. 2002 1998 1999 2000 2001 Do you know? • How many computers in THAILAND? *http://www.nso.go.th/eng/indicators/core_e.htm

  4. How can we classify computers? • Personal Computer • Desktop Computer • Notebook • PDA – Personal Digital Assistant • Supercomputer  Mainframe • High Computation Power

  5. Computer Components • Input Devices • Output Devices • Computing & Processing Unit

  6. Secondary Memory Main Memory HD CPU Output Devices Input Devices Computer Components

  7. Computer Memory • 1.Main Memory • 2.Secondary Memory

  8. 1. Main Memory • Can be devided into 2 Categories • RAM (Random Access Memory) • ROM (Read Only Memory) • Memory Cell -> Byte -> Bit • 1 Byte = 8 bits

  9. 2. Secondary Memory • Floppy disk • Hard disk • CDROM • DVDROM Etc… 1 Kbyte = 210 = 1024 bytes 1 Mbyte = 220 = 1,048,576 bytes 1 Gbyte = 230 = 1,073,741,824 bytes

  10. Main Memory Much faster More expensive Volatile Secondary Memory Slower Less expensive Permanent Main Memory VS Secondary Memory

  11. Do you know ASIMO? *http://world.honda.com/ASIMO/

  12. Outline • Introduction to Computer • How to run program? • Programming Languages • Introduction to Pascal Language

  13. How to run program? • After boot Process • May be Windows XP (Operating System: OS) has been loaded into Main Memory • User tell OS to load program P1 • OS Load program P1 from Secondary Memory into Main Memory • OS run program from Main Memory

  14. Outline • Introduction to Computer • How to run program? • Programming Languages

  15. Programming Languages • Machine Language • Assembly Language • High-Level Language

  16. High-level VS Assembly VS Machine Language • High-level Language SUM := A * 2 + ALPHA/3; • Assembly Language MULL3 A, #2, R6 DIVL3 #3, ALPHA, R7 ADDL3 R6, R7, SUM • Machine Language 00011000011 00011001111 10011000111

  17. High-Level Languages • Procedural Language • Fortran • Cobol • Basic • C • Pascal • Object-Oriented Language • C++ • Java • C# • Functional Language • Lisp • Logic Language • Prolog

  18. How to execute program from non-machine language? • Interpretation Method • Translation Method

  19. Input Source Program Source Program Source Program Output Interpretation Method Process Interpreter (on computer)

  20. Input Source Program Source Program Source Program File *.exe Translation Method Process Translator (on computer)

  21. Translators • Assembler (assembly) • Compiler (High-level language)

  22. Quiz1 What will happen to you when our world have no computers?

  23. Summary • Computer Basic • Programming Language • Interpreter Method • Translator Method

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