1. 1 nd Semester 2007 1 Module1 Introduction to Computer and Programming Thanawin Rakthanmanon Email: fengtwr@ku.ac.th Create by: Aphirak Jansang Computer Engineering Department Kasetsart University, Bangkok THAILAND

2. 1 nd Semester 2007 2 Outline  Introduction to Computer  Programming Languages

3. 1 nd Semester 2007 3 Definition of Computer  Devices for performing computations at high speeds with great accuracy  A machine that can be programmed to manipulate symbols  Physical components are known as “Hardware”

4. 1 nd Semester 2007 4 Computer Systems  Hardware (HW) Actual physical machines (equipment) that make up the computer (e.g. monitor, keyboard)  Software (SW) Programs written for a specific application are often called softwares (e.g. Window XP, Linux, Microsoft word)

5. 1 nd Semester 2007 5 Computer Categories  Personal Computer Desktop Computer Notebook PDA – Personal Digital Assistant  Supercomputer  Mainframe High Computation Power

6. 1 nd Semester 2007 6 Computer Components  Input Devices  Output Devices  Computing & Processing Unit

7. 1 nd Semester 2007 7 Input Devices HD CPU Main Memory Secondary Memory (DVD, FDD, HDD) Computer Components (details) *CPU= Central Processing Unit Output Devices

8. 1 nd Semester 2007 8 Computer Components (pictures) Hard discCPU

9. 1 nd Semester 2007 9 Computer Memory  1.Main Memory  2.Secondary Memory

10. 1 nd Semester 2007 10 1. Main Memory  Can be divided into 2 Categories RAM (Random Access Memory) ROM (Read Only Memory)  Memory Cell -> Byte -> bit  1 Byte = 8 bits

11. 1 nd Semester 2007 11 2. Secondary Memory  Floppy disk  Hard disk  CD-ROM, CD-R, CD-RW  DVD-ROM, DVD-R, DVD-RW Etc… 1 Kbyte = 2 10 = 1024 bytes 1 Mbyte = 2 20 = 1,048,576 bytes 1 Gbyte = 2 30 = 1,073,741,824 bytes

12. 1 nd Semester 2007 12 Data Representation  Data in computer is represented in “ bit” bit = binary digit  0 or 1 Byte = 8 bits 1 byte can represent many kids of data  1 byte = 01100001 2  the above 1 byte means, “a” or 97  the meaning of 1 byte depends on the program

13. 1 nd Semester 2007 13 Main Memory VS Secondary Memory  Main Memory Much faster More expensive Volatile  Secondary Memory Slower Less expensive Permanent

14. 1 nd Semester 2007 14 Outline  Introduction to Computer  Programming Languages

15. 1 nd Semester 2007 15 Programming Languages  Program A set of instructions for a computer to follow, written in specific programming language  Types of programming language High-Level Language Assembly Language Machine Language

16. 1 nd Semester 2007 16 High-level VS Assembly VS Machine Language  High-level Language Nearly like human word SUM := A * 2 + ALPHA/3;  Assembly Language Some key words are understandable MULL3A, #2, R ADDL3R6, R7, SUM  Machine Language Only “0” and “1” 00011000011 00011001111 10011000111 Computer itself understands only Machine language

17. 1 nd Semester 2007 17 High-Level Languages  Procedural Language Fortran Cobol Basic C Pascal  Object-Oriented Language C++ Java C# C#  Functional Language Lisp  Logic Language Prolog

18. 1 nd Semester 2007 18 Summary  Basis of Computer  Programming Language

19. 1 nd Semester 2007 19 Tips  Links http://www.cpe.ku.ac.th/~aphirak/ http://www.cpe.ku.ac.th/~pattara/ http://smart.ku.ac.th/ http://www.cpe.ku.ac.th/~aphirak/ http://www.cpe.ku.ac.th/~pattara/ http://smart.ku.ac.th/ http://course.ku.ac.th/  How to check MAC address of your PC Click “run” (from start button) “ cmd ” Type “ ipconfig /all ”  Physical address : 00-16-E5-xx-xx-xx