11nd Semester 2007

Module1Module1Introduction to Introduction to

Computer and ProgrammingComputer and Programming

Thanawin RakthanmanonEmail: fengtwr@ku.ac.th

Create by: Aphirak JansangComputer Engineering Department

Kasetsart University, Bangkok THAILAND

21nd Semester 2007

Outline

Introduction to Computer Programming Languages

31nd Semester 2007

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”

41nd Semester 2007

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)

51nd Semester 2007

Computer Categories

Personal Computer Desktop Computer Notebook PDA – Personal Digital Assistant

Supercomputer Mainframe High Computation Power

61nd Semester 2007

Computer Components

Input Devices Output Devices Computing & Processing Unit

71nd Semester 2007

Input Devices

HD

CPU MainMemory

Secondary Memory (DVD, FDD, HDD)

Computer Components (details)

*CPU= Central Processing Unit

Output Devices

81nd Semester 2007

Computer Components (pictures)

Hard disc CPU

91nd Semester 2007

Computer Memory

1.Main Memory 2.Secondary Memory

101nd Semester 2007

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

111nd Semester 2007

2. Secondary Memory

Floppy disk Hard disk CD-ROM, CD-R, CD-RW DVD-ROM, DVD-R, DVD-RWEtc…

1 Kbyte = 210 = 1024 bytes1 Mbyte = 220 = 1,048,576 bytes

1 Gbyte = 230 = 1,073,741,824 bytes

121nd Semester 2007

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 = 011000012

the above 1 byte means, “a” or 97 the meaning of 1 byte depends on the program

131nd Semester 2007

Main Memory VS Secondary Memory

Main MemoryMuch fasterMore

expensiveVolatile

Secondary MemorySlowerLess expensivePermanent

141nd Semester 2007

Outline

Introduction to Computer Programming Languages

151nd Semester 2007

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

161nd Semester 2007

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 MULL3 A, #2, RADDL3 R6, R7, SUM

Machine Language Only “0” and “1”

0001100001100011001111 10011000111

Computer itself understands only Machine language

171nd Semester 2007

High-Level Languages

Procedural Language Fortran Cobol Basic C Pascal

Object-Oriented Language C++ Java C#C#

Functional Language Lisp

Logic Language Prolog

181nd Semester 2007

Summary

Basis of Computer Programming Language

191nd Semester 2007

Tips

Links 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