Python Programming: An Introduction to Computer Science

Save this PDF as:
 WORD  PNG  TXT  JPG

Size: px
Start display at page:

Download "Python Programming: An Introduction to Computer Science"

Transcription

1 Python Programming: An Introduction to Computer Science Chapter 1 Computers and Programs 1

2 The Universal Machine n A computer -- a machine that stores and manipulates information under the control of a changeable program. n Unlike a (simple) calculator or car computer, which do not involve changeable programs. 2

3 Computer Program n Algorithm = a detailed, step-by-step set of instructions telling a computer what to do. n Program = implementation of an algorithm = algorithm written in a particular language n Programs are executed. 3

4 Computer Power n Any computer (with suitable programming), can computer the same things any other computer can can have the same input-output behaviour n They may differ n in efficiency. n in how much information they store. n in peripheral devices, network access 4

5 Programming n Software = programs. n Hardware = physical machine. n Software rules the hardware. n Creating software -- programming. 5

6 What is Computer Science? n It is not the study of computers! Computers are to computer science what telescopes are to astronomy E. Dijkstra n It is the study of algorithms: Design, implementation and analysis of algorithms. n Programming is an essential part. 6

7 What is Computer Science? n Computer science does not belong to natural science unlike physics, chemistry, biology it does not use the scientific method. n It is in part mathematics, in part engineering: n mathematical theory of algorithms n software and hardware engineering 7

8 Hardware - CPU n The central processing unit (CPU) is the brain of a computer. n The CPU carries out all the basic operations on the data. n Examples: simple arithmetic operations, testing to see if two numbers are equal. 8

9 Hardware - Memory n Memory stores programs and data. n CPU can only directly access information stored in main memory (RAM or Random Access Memory). n Main memory is fast, but volatile, i.e. when the power is interrupted, the contents of memory are lost. n Secondary memory provides permanent storage: magnetic (hard drive, floppy), optical (CD, DVD) 9

10 Hardware I/O devices n Input devices n Information is passed to the computer through keyboards, mice, scanners, etc. n Output devices n Processed information is presented to the user through the monitor, printer, etc. 10

11 Executing programs n Fetch-Execute Cycle n First instruction retrieved from memory n Decode the instruction to see what it represents n Appropriate action carried out. n Next instruction fetched, decoded, and executed. n Lather, rinse, repeat! 11

12 Syntax vs. semantics n Natural language has ambiguity and imprecision problems when used to describe complex algorithms. n Programs expressed in an unambiguous, precise programming languages. n Every structure in programming language has a precise form, called its syntax n Every structure in programming language has a precise meaning, called its semantics. 12

13 Jargon n Programmers will often refer to their program as computer code. n Process of writing an algorithm in a programming language often called coding. 13

14 Language Level n High-level computer languages n Designed to be used and understood by humans n Low-level language n Computer hardware can only understand a very low level language known as machine language 14

15 Low Level Language n Add two numbers: n Load the number from memory location 2001 into the CPU n Load the number from memory location 2002 into the CPU n Add the two numbers in the CPU n Store the result into location 2003 n In machine language, these instructions are represented in binary (1 s and 0 s) 15

16 High Level Language n c = a + b n This needs to be translated into machine language that the computer can execute. n Compilers convert programs written in a high-level language into the machine language of some computer. 16

17 Interpreters n Interpreters simulate a computer that understands a high-level language. n The source program is not translated into machine language all at once. n An interpreter analyzes and executes the source code instruction by instruction. 17

18 Compiling vs. Interpreting n Once program is compiled, it can be executed over and over without the source code or compiler. If it is interpreted, the source code and interpreter are needed each time the program runs. n Compiled programs generally run faster since the translation of the source code happens only once. 18

19 Interpreter advantages n Interpreted languages are part of a more flexible programming environment since they can be developed and run interactively n Interpreted programs are more portable, meaning the executable code produced from a compiler for a Pentium won t run on a Mac, without recompiling. If a suitable interpreter already exists, the interpreted code can be run with no modifications. 19

20 Python We will use Python 3 (Python 3.x) It is not compatible with Python 2.x Use Integrated Development Environment (IDE) idle3. 20

21 Python n The >>> is a Python prompt indicating that Python is ready for us to give it a command. These commands are called statements. n >>> print("hello, world") Hello, world >>> print(2+3) 5 >>> print("2+3=", 2+3) 2+3= 5 >>> 21

22 Functions n Usually we want to execute several statements together that solve a common problem. One way to do this is to use a function. n >>> def hello(): print("hello") print("computers are Fun") >>> 22

23 Function definition n >>> def hello(): print("hello") print("computers are Fun") >>> n The first line tells Python we are defining a new function called hello. n The following lines are indented to show that they are part of the hello function. n The blank line (hit enter twice) lets Python know the definition is finished. 23

24 Function call n >>> def hello(): print("hello") print("computers are Fun") >>> n Notice that nothing has happened yet! We ve defined the function, but we haven t told Python to perform the function! n A function is invoked by typing its name. n >>> hello() Hello Computers are Fun >>> 24

25 Parameter lists n What s the deal with the () s? n Commands can have changeable parts called parameters that are placed between the () s. n >>> def greet(person): print("hello", person) print ("How are you?") >>> 25

26 Calling functions n >>> greet("terry") Hello Terry How are you? >>> greet("paula") Hello Paula How are you? >>> n When we use parameters, we can customize the behaviour of our function. 26

27 Module files n n n n When we exit idle3, the functions we have defined cease to exist! Programs are usually composed of functions, in modules that are saved on disk so that they can be used again and again. A module file is a text file created in text editing software (saved as plain text ) that contains function definitions. An integrated development environment IDE, such as idle3, is contains an editor (with automatic indenting, highlighting keywords) and a windoe to run the program (with I/O) 27

28 Program chaos.py # File: chaos.py # A simple program illustrating chaotic behavior def main(): print("this program illustrates a chaotic function") x = eval(input("enter a number between 0 and 1: ")) for i in range(10): x = 3.9 * x * (1 - x) print(x) main() 28

29 n We ll use filename.py when we save our work to indicate it s a Python program. n In this code we re defining a new function called main. n The call main() tells Python to run the code. 29

30 Output This program illustrates a chaotic function Enter a number between 0 and 1: >>> 30

31 Comments # File: chaos.py # A simple program illustrating chaotic behavior n Lines that start with # are called comments n Intended for human readers and ignored by Python n Python skips text from # to end of line 31

32 Inside a Python Program def main(): n Beginning of the definition of a function called main n Since our program has only this one module, it could have been written without the main function. n The use of main is customary, however. 32

33 Print print("this program illustrates a chaotic function") n Print a message introducing the program. 33

34 Input x = eval(input("enter a number between 0 and 1: ")) n x is a variable n A variable is used to give a name to a value, so that we can refer to it later. n The quoted information is displayed, and the number typed in response is stored in x. 34

35 For-Loop for i in range(10): n For is a loop construct n A loop tells Python to repeat the same thing over and over. n In this example, the following code will be repeated 10 times. 35

36 x = 3.9 * x * (1 - x) print(x) n These lines are the body of the loop. n They repeated each time through the loop. n The body of the loop is identified by indentation. n The effect of the loop is the same as repeating this two lines 10 times! 36

37 for i in range(10): x = 3.9 * x * (1 - x) print(x) n These are equivalent! x = 3.9 * x * (1 - x) print(x) x = 3.9 * x * (1 - x) print(x) x = 3.9 * x * (1 - x) print(x) x = 3.9 * x * (1 - x) print(x) x = 3.9 * x * (1 - x) print(x) x = 3.9 * x * (1 - x) print(x) x = 3.9 * x * (1 - x) print(x) x = 3.9 * x * (1 - x) print(x) x = 3.9 * x * (1 x) print(x) x = 3.9 * x * (1 - x) print(x) 37

38 Assignment statement x = 3.9 * x * (1 - x) n assignment statement n The part on the right-hand side (RHS) of the = is an expression. n * stands for multiplication n Once the value on the RHS is computed, it is stored back into (assigned) into x 38

39 Inside a Python Program main() n a function call - tells Python to execute the code in the function main 39

40 Chaos and Computers n The chaos.py program: def main(): main() print("this program illustrates a chaotic function") x = eval(input("enter a number between 0 and 1: ")) for i in range(10): x = 3.9 * x * (1 - x) print(x) n For any given input, returns 10 seemingly random numbers between 0 and 1 n It appears that the value of x is chaotic 40

41 Chaos and Computers n The function computed by program has the general form kx ( )(1 x) where k is 3.9 n This type of function is known as a logistic function. n It models certain kinds of unstable electronic circuits. n Very small differences in initial value can have large differences in the output. 41

42 Chaos and Computers n Input: n Input:

Python Programming: An Introduction to Computer Science

Python Programming: An Introduction to Computer Science Python Programming: An Introduction to Computer Science Chapter 1 Computers and Programs 1 Objectives To understand the respective roles of hardware and software in a computing system. To learn what computer

More information

Objectives. Python Programming: An Introduction to Computer Science. Lab 01. What we ll learn in this class

Objectives. Python Programming: An Introduction to Computer Science. Lab 01. What we ll learn in this class Python Programming: An Introduction to Computer Science Chapter 1 Computers and Programs Objectives Introduction to the class Why we program and what that means Introduction to the Python programming language

More information

Computers and Programs

Computers and Programs Chapter 1 Computers and Programs Objectives To understand the respective roles of hardware and software in a computing system. To learn what computer scientists study and the techniques that they use.

More information

Primary Memory. Input Units CPU (Central Processing Unit)

Primary Memory. Input Units CPU (Central Processing Unit) Basic Concepts of Computer Hardware Primary Memory Input Units CPU (Central Processing Unit) Output Units This model of the typical digital computer is often called the von Neuman compute Programs and

More information

An Introduction to Computer Science and Computer Organization Comp 150 Fall 2008

An Introduction to Computer Science and Computer Organization Comp 150 Fall 2008 An Introduction to Computer Science and Computer Organization Comp 150 Fall 2008 Computer Science the study of algorithms, including Their formal and mathematical properties Their hardware realizations

More information

Python Programming: An Introduction to Computer Science. John M. Zelle, Ph.D.

Python Programming: An Introduction to Computer Science. John M. Zelle, Ph.D. Python Programming: An Introduction to Computer Science John M. Zelle, Ph.D. Version 1.0rc2 Fall 2002 Copyright c 2002 by John M. Zelle All rights reserved. No part of this publication may be reproduced,

More information

Topics. Introduction. Java History CS 146. Introduction to Programming and Algorithms Module 1. Module Objectives

Topics. Introduction. Java History CS 146. Introduction to Programming and Algorithms Module 1. Module Objectives Introduction to Programming and Algorithms Module 1 CS 146 Sam Houston State University Dr. Tim McGuire Module Objectives To understand: the necessity of programming, differences between hardware and software,

More information

A Python Tour: Just a Brief Introduction CS 303e: Elements of Computers and Programming

A Python Tour: Just a Brief Introduction CS 303e: Elements of Computers and Programming A Python Tour: Just a Brief Introduction CS 303e: Elements of Computers and Programming "The only way to learn a new programming language is by writing programs in it." -- B. Kernighan and D. Ritchie "Computers

More information

Machine Architecture and Number Systems. Major Computer Components. Schematic Diagram of a Computer. The CPU. The Bus. Main Memory.

Machine Architecture and Number Systems. Major Computer Components. Schematic Diagram of a Computer. The CPU. The Bus. Main Memory. 1 Topics Machine Architecture and Number Systems Major Computer Components Bits, Bytes, and Words The Decimal Number System The Binary Number System Converting from Decimal to Binary Major Computer Components

More information

SIT102 Introduction to Programming

SIT102 Introduction to Programming SIT102 Introduction to Programming After working through this session you should: Understand the relationships between operating systems, their user interfaces, and programs; Understand the difference

More information

Introduction to the course, Eclipse and Python

Introduction to the course, Eclipse and Python As you arrive: 1. Start up your computer and plug it in. 2. Log into Angel and go to CSSE 120. Do the Attendance Widget the PIN is on the board. 3. Go to the Course Schedule web page. Open the Slides for

More information

Chapter 3: Computer Hardware Components: CPU, Memory, and I/O

Chapter 3: Computer Hardware Components: CPU, Memory, and I/O Chapter 3: Computer Hardware Components: CPU, Memory, and I/O What is the typical configuration of a computer sold today? The Computer Continuum 1-1 Computer Hardware Components In this chapter: How did

More information

Outline. hardware components programming environments. installing Python executing Python code. decimal and binary notations running Sage

Outline. hardware components programming environments. installing Python executing Python code. decimal and binary notations running Sage Outline 1 Computer Architecture hardware components programming environments 2 Getting Started with Python installing Python executing Python code 3 Number Systems decimal and binary notations running

More information

Management Challenge. Managing Hardware Assets. Central Processing Unit. What is a Computer System?

Management Challenge. Managing Hardware Assets. Central Processing Unit. What is a Computer System? Management Challenge Managing Hardware Assets What computer processing and storage capability does our organization need to handle its information and business transactions? What arrangement of computers

More information

CS 3530 Operating Systems. L02 OS Intro Part 1 Dr. Ken Hoganson

CS 3530 Operating Systems. L02 OS Intro Part 1 Dr. Ken Hoganson CS 3530 Operating Systems L02 OS Intro Part 1 Dr. Ken Hoganson Chapter 1 Basic Concepts of Operating Systems Computer Systems A computer system consists of two basic types of components: Hardware components,

More information

CHAPTER 2: HARDWARE BASICS: INSIDE THE BOX

CHAPTER 2: HARDWARE BASICS: INSIDE THE BOX CHAPTER 2: HARDWARE BASICS: INSIDE THE BOX Multiple Choice: 1. Processing information involves: A. accepting information from the outside world. B. communication with another computer. C. performing arithmetic

More information

Chapter 1. The largest computers, used mainly for research, are called a. microcomputers. b. maxicomputers. c. supercomputers. d. mainframe computers.

Chapter 1. The largest computers, used mainly for research, are called a. microcomputers. b. maxicomputers. c. supercomputers. d. mainframe computers. Chapter 1 CD-ROM stands for: a. Compact Disk Random Only Memory b. Compact Disk Read Only Memory c. Computer Device Read Only Memory d. Computer Disk Random Online Memory Control Unit (CU) is the a. Main

More information

Module 1 Introduction to Information and Communication Technologies

Module 1 Introduction to Information and Communication Technologies Module 1 Introduction to Information and Communication Technologies Lesson 3 What are the Hardware Components of a Computer? UNESCO EIPICT Module 1. Lesson 3 1 Rationale The hardware components are the

More information

Introduction to Computers and Programming

Introduction to Computers and Programming M01_GADD7119_01_SE_C01.QXD 1/30/08 12:55 AM Page 1 CHAPTER 1 Introduction to Computers and Programming TOPICS 1.1 Introduction 1.2 Hardware and Software 1.3 How Computers Store Data 1.4 How a Program Works

More information

Chapter 2 Basic Structure of Computers. Jin-Fu Li Department of Electrical Engineering National Central University Jungli, Taiwan

Chapter 2 Basic Structure of Computers. Jin-Fu Li Department of Electrical Engineering National Central University Jungli, Taiwan Chapter 2 Basic Structure of Computers Jin-Fu Li Department of Electrical Engineering National Central University Jungli, Taiwan Outline Functional Units Basic Operational Concepts Bus Structures Software

More information

Parts of a Computer. Preparation. Objectives. Standards. Materials. 1 1999 Micron Technology Foundation, Inc. All Rights Reserved

Parts of a Computer. Preparation. Objectives. Standards. Materials. 1 1999 Micron Technology Foundation, Inc. All Rights Reserved Parts of a Computer Preparation Grade Level: 4-9 Group Size: 20-30 Time: 75-90 Minutes Presenters: 1-3 Objectives This lesson will enable students to: Identify parts of a computer Categorize parts of a

More information

CS101 Lecture 24: Thinking in Python: Input and Output Variables and Arithmetic. Aaron Stevens 28 March 2011. Overview/Questions

CS101 Lecture 24: Thinking in Python: Input and Output Variables and Arithmetic. Aaron Stevens 28 March 2011. Overview/Questions CS101 Lecture 24: Thinking in Python: Input and Output Variables and Arithmetic Aaron Stevens 28 March 2011 1 Overview/Questions Review: Programmability Why learn programming? What is a programming language?

More information

3 SOFTWARE AND PROGRAMMING LANGUAGES

3 SOFTWARE AND PROGRAMMING LANGUAGES 3 SOFTWARE AND PROGRAMMING LANGUAGES 3.1 INTRODUCTION In the previous lesson we discussed about the different parts and configurations of computer. It has been mentioned that programs or instructions have

More information

CHAPTER 1 ENGINEERING PROBLEM SOLVING. Copyright 2013 Pearson Education, Inc.

CHAPTER 1 ENGINEERING PROBLEM SOLVING. Copyright 2013 Pearson Education, Inc. CHAPTER 1 ENGINEERING PROBLEM SOLVING Computing Systems: Hardware and Software The processor : controls all the parts such as memory devices and inputs/outputs. The Arithmetic Logic Unit (ALU) : performs

More information

We will learn the Python programming language. Why? Because it is easy to learn and many people write programs in Python so we can share.

We will learn the Python programming language. Why? Because it is easy to learn and many people write programs in Python so we can share. LING115 Lecture Note Session #4 Python (1) 1. Introduction As we have seen in previous sessions, we can use Linux shell commands to do simple text processing. We now know, for example, how to count words.

More information

Obj: Sec 1.0, to describe the relationship between hardware and software HW: Read p.2 9. Do Now: Name 3 parts of the computer.

Obj: Sec 1.0, to describe the relationship between hardware and software HW: Read p.2 9. Do Now: Name 3 parts of the computer. C1 D1 Obj: Sec 1.0, to describe the relationship between hardware and software HW: Read p.2 9 Do Now: Name 3 parts of the computer. 1 Hardware and Software Hardware the physical, tangible parts of a computer

More information

Computer Organization

Computer Organization Basics Machine, software, and program design JPC and JWD 2002 McGraw-Hill, Inc. Computer Organization CPU - central processing unit Where decisions are made, computations are performed, and input/output

More information

Lesson 06: Basics of Software Development (W02D2

Lesson 06: Basics of Software Development (W02D2 Lesson 06: Basics of Software Development (W02D2) Balboa High School Michael Ferraro Lesson 06: Basics of Software Development (W02D2 Do Now 1. What is the main reason why flash

More information

Operating Systems. John SUM Institute of Technology Management National Chung Hsing University Taichung, ROC. December 6, 2012

Operating Systems. John SUM Institute of Technology Management National Chung Hsing University Taichung, ROC. December 6, 2012 Operating Systems John SUM Institute of Technology Management National Chung Hsing University Taichung, ROC December 6, 2012 Contents 1 Introduction 2 2 System Initialization 2 2.1 Instructions from BIOS......................

More information

1 PERSONAL COMPUTERS

1 PERSONAL COMPUTERS PERSONAL COMPUTERS 1 2 Personal computer a desktop computer a laptop a tablet PC or a handheld PC Software applications for personal computers include word processing spreadsheets databases web browsers

More information

Computer Basics: Chapters 1 & 2

Computer Basics: Chapters 1 & 2 Computer Basics: Chapters 1 & 2 Definition of a Computer What does IPOS stand for? Input Process Output Storage Other types of Computers Name some examples of other types of computers, other than a typical

More information

Chapter 3. Operating Systems

Chapter 3. Operating Systems Christian Jacob Chapter 3 Operating Systems 3.1 Evolution of Operating Systems 3.2 Booting an Operating System 3.3 Operating System Architecture 3.4 References Chapter Overview Page 2 Chapter 3: Operating

More information

Chapter 13: Program Development and Programming Languages

Chapter 13: Program Development and Programming Languages Understanding Computers Today and Tomorrow 12 th Edition Chapter 13: Program Development and Programming Languages Learning Objectives Understand the differences between structured programming, object-oriented

More information

Chap-02, Hardware and Software. Hardware Model

Chap-02, Hardware and Software. Hardware Model Philadelphia University School of Business Administration INFO-101 Information Systems Prof London Chap-02, Hardware and Software Hardware Components Central processing unit (CPU) Arithmetic/logic unit

More information

EKT150 Introduction to Computer Programming. Wk1-Introduction to Computer and Computer Program

EKT150 Introduction to Computer Programming. Wk1-Introduction to Computer and Computer Program EKT150 Introduction to Computer Programming Wk1-Introduction to Computer and Computer Program A Brief Look At Computer Computer is a device that receives input, stores and processes data, and provides

More information

Tech Application Chapter 3 STUDY GUIDE

Tech Application Chapter 3 STUDY GUIDE Name: Class: Date: Tech Application Chapter 3 STUDY GUIDE Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. 1. This type of device retains data

More information

Basic Computer Hardware Notes Copy All

Basic Computer Hardware Notes Copy All AGP Basic Computer Hardware Notes Copy All The Accelerated Graphics Port is a high speed connection to the motherboard for video cards. Faster than a PCI card and doesn t use the system memory. BIOS The

More information

lesson 1 An Overview of the Computer System

lesson 1 An Overview of the Computer System essential concepts lesson 1 An Overview of the Computer System This lesson includes the following sections: The Computer System Defined Hardware: The Nuts and Bolts of the Machine Software: Bringing the

More information

CONTROL DATA" 3200 Computer system / ~eal Time Applications

CONTROL DATA 3200 Computer system / ~eal Time Applications CONTROL DATA" 3200 Computer system / ~eal Time Applications At this precise moment, events in science and industry are occurring which demand solutions and control. Among these events- in-real-time are

More information

CSCA0102 IT & Business Applications. Foundation in Business Information Technology School of Engineering & Computing Sciences FTMS College Global

CSCA0102 IT & Business Applications. Foundation in Business Information Technology School of Engineering & Computing Sciences FTMS College Global CSCA0102 IT & Business Applications Foundation in Business Information Technology School of Engineering & Computing Sciences FTMS College Global Chapter 2 Data Storage Concepts System Unit The system unit

More information

INTRODUCTION TO INFORMATION SYSTEMS

INTRODUCTION TO INFORMATION SYSTEMS INTRODUCTION TO INFORMATION SYSTEMS CHAPTER.3 COMPUTER SOFTWARE PART2 System software Software that manages and supports a computer system. It can be divided into the following categories. System management

More information

Writing Assignment #2 due Today (5:00pm) - Post on your CSC101 webpage - Ask if you have questions! Lab #2 Today. Quiz #1 Tomorrow (Lectures 1-7)

Writing Assignment #2 due Today (5:00pm) - Post on your CSC101 webpage - Ask if you have questions! Lab #2 Today. Quiz #1 Tomorrow (Lectures 1-7) Overview of Computer Science CSC 101 Summer 2011 Main Memory vs. Auxiliary Storage Lecture 7 July 14, 2011 Announcements Writing Assignment #2 due Today (5:00pm) - Post on your CSC101 webpage - Ask if

More information

Computer Layers. Hardware BOOT. Operating System. Applications

Computer Layers. Hardware BOOT. Operating System. Applications Computers Software Computer Layers Hardware BOOT Operating System Applications Software Classifications System Software (operating system) Application Software Utility Software Malware Viruses and worms

More information

Computer Performance. Topic 3. Contents. Prerequisite knowledge Before studying this topic you should be able to:

Computer Performance. Topic 3. Contents. Prerequisite knowledge Before studying this topic you should be able to: 55 Topic 3 Computer Performance Contents 3.1 Introduction...................................... 56 3.2 Measuring performance............................... 56 3.2.1 Clock Speed.................................

More information

A Java Crib Sheet. First: Find the Command Line

A Java Crib Sheet. First: Find the Command Line A Java Crib Sheet Unlike JavaScript, which is pretty much ready-to-go on any computer with a modern Web browser, Java might be a more complex affair However, logging some time with Java can be fairly valuable,

More information

CS 16: Assembly Language Programming for the IBM PC and Compatibles

CS 16: Assembly Language Programming for the IBM PC and Compatibles CS 16: Assembly Language Programming for the IBM PC and Compatibles First, a little about you Your name Have you ever worked with/used/played with assembly language? If so, talk about it Why are you taking

More information

Computer Systems Structure Main Memory Organization

Computer Systems Structure Main Memory Organization Computer Systems Structure Main Memory Organization Peripherals Computer Central Processing Unit Main Memory Computer Systems Interconnection Communication lines Input Output Ward 1 Ward 2 Storage/Memory

More information

KEMENTERIAN PELAJARAN MALAYSIA COMPUTER PARTS & COMPONENTS INPUT DEVICES OUTPUT DEVICES STORAGE DEVICES PUSAT PERKEMBANGAN KURIKULUM

KEMENTERIAN PELAJARAN MALAYSIA COMPUTER PARTS & COMPONENTS INPUT DEVICES OUTPUT DEVICES STORAGE DEVICES PUSAT PERKEMBANGAN KURIKULUM KEMENTERIAN PELAJARAN MALAYSIA Self Access Learning Module ICT Literacy for Secondary School Programme Computer Hardware COMPUTER PARTS & COMPONENTS INPUT DEVICES OUTPUT DEVICES STORAGE DEVICES PUSAT PERKEMBANGAN

More information

COMPUTER SCIENCE AND ENGINEERING - Microprocessor Systems - Mitchell Aaron Thornton

COMPUTER SCIENCE AND ENGINEERING - Microprocessor Systems - Mitchell Aaron Thornton MICROPROCESSOR SYSTEMS Mitchell Aaron Thornton, Department of Electrical and Computer Engineering, Mississippi State University, PO Box 9571, Mississippi State, MS, 39762-9571, United States. Keywords:

More information

CS 40 Computing for the Web

CS 40 Computing for the Web CS 40 Computing for the Web Art Lee January 20, 2015 Announcements Course web on Sakai Homework assignments submit them on Sakai Email me the survey: See the Announcements page on the course web for instructions

More information

Introduction to Programming

Introduction to Programming Introduction to Programming If you re new to programming, you might be intimidated by code and flowcharts. You might even wonder how you ll ever understand them. This lesson offers some basic ideas and

More information

Chapter 1 Fundamentals of Java Programming

Chapter 1 Fundamentals of Java Programming Chapter 1 Fundamentals of Java Programming Computers and Computer Programming Writing and Executing a Java Program Elements of a Java Program Features of Java Accessing the Classes and Class Members The

More information

Writing Simple Programs

Writing Simple Programs Chapter 2 Writing Simple Programs Objectives To know the steps in an orderly software development process. To understand programs following the Input, Process, Output (IPO) pattern and be able to modify

More information

Chapter 12 Programming Concepts and Languages

Chapter 12 Programming Concepts and Languages Chapter 12 Programming Concepts and Languages Chapter 12 Programming Concepts and Languages Paradigm Publishing, Inc. 12-1 Presentation Overview Programming Concepts Problem-Solving Techniques The Evolution

More information

Hardware: Input, Processing, and Output Devices

Hardware: Input, Processing, and Output Devices Hardware: Input, Processing, and Output Devices Computer Systems Hardware Components Execution of an Instruction Processing Characteristics and Functions Physical Characteristics of CPU Memory Characteristics

More information

A Computer Glossary. For the New York Farm Viability Institute Computer Training Courses

A Computer Glossary. For the New York Farm Viability Institute Computer Training Courses A Computer Glossary For the New York Farm Viability Institute Computer Training Courses 2006 GLOSSARY This Glossary is primarily applicable to DOS- and Windows-based machines and applications. Address:

More information

Today s Topics... Intro to Computer Science (cont.) Python exercise. Reading Assignment. Ch 1: 1.5 (through 1.5.2) Lecture Notes CPSC 121 (Fall 2011)

Today s Topics... Intro to Computer Science (cont.) Python exercise. Reading Assignment. Ch 1: 1.5 (through 1.5.2) Lecture Notes CPSC 121 (Fall 2011) Today s Topics... Intro to Computer Science (cont.) Python exercise Reading Assignment Ch 1: 1.5 (through 1.5.2) S. Bowers 1 of 8 Computation (cont.) What parts do recipes usually have? A description (the

More information

Problem Solving With C++ Ninth Edition

Problem Solving With C++ Ninth Edition CISC 1600/1610 Computer Science I Programming in C++ Professor Daniel Leeds dleeds@fordham.edu JMH 328A Introduction to programming with C++ Learn Fundamental programming concepts Key techniques Basic

More information

THREE YEAR DEGREE (HONS.) COURSE BACHELOR OF COMPUTER APPLICATION (BCA) First Year Paper I Computer Fundamentals

THREE YEAR DEGREE (HONS.) COURSE BACHELOR OF COMPUTER APPLICATION (BCA) First Year Paper I Computer Fundamentals THREE YEAR DEGREE (HONS.) COURSE BACHELOR OF COMPUTER APPLICATION (BCA) First Year Paper I Computer Fundamentals Full Marks 100 (Theory 75, Practical 25) Introduction to Computers :- What is Computer?

More information

Introduction. What is an Operating System?

Introduction. What is an Operating System? Introduction What is an Operating System? 1 What is an Operating System? 2 Why is an Operating System Needed? 3 How Did They Develop? Historical Approach Affect of Architecture 4 Efficient Utilization

More information

Basics of Computer 1.1 INTRODUCTION 1.2 OBJECTIVES

Basics of Computer 1.1 INTRODUCTION 1.2 OBJECTIVES Basics of Computer :: 1 1 Basics of Computer 1.1 INTRODUCTION In this lesson we present an overview of the basic design of a computer system: how the different parts of a computer system are organized

More information

1.1 Electronic Computers Then and Now

1.1 Electronic Computers Then and Now 1.1 Electronic Computers Then and Now The first electronic computer was built in the late 1930s by Dr.John Atanasoff and Clifford Berry at Iowa State University in USA. They designed their computer to

More information

Overview of MIS Professor Merrill Warkentin

Overview of MIS Professor Merrill Warkentin Management Systems (MIS) Mississippi State University Data raw numbers - not processed facts, lists, numbers, tables of value to an organization 1 2 Data Processing (DP) the restructuring of data to improve

More information

University of Hull Department of Computer Science. Wrestling with Python Week 01 Playing with Python

University of Hull Department of Computer Science. Wrestling with Python Week 01 Playing with Python Introduction Welcome to our Python sessions. University of Hull Department of Computer Science Wrestling with Python Week 01 Playing with Python Vsn. 1.0 Rob Miles 2013 Please follow the instructions carefully.

More information

Levels of Programming Languages. Gerald Penn CSC 324

Levels of Programming Languages. Gerald Penn CSC 324 Levels of Programming Languages Gerald Penn CSC 324 Levels of Programming Language Microcode Machine code Assembly Language Low-level Programming Language High-level Programming Language Levels of Programming

More information

Introduction to Python

Introduction to Python WEEK ONE Introduction to Python Python is such a simple language to learn that we can throw away the manual and start with an example. Traditionally, the first program to write in any programming language

More information

Language Evaluation Criteria. Evaluation Criteria: Readability. Evaluation Criteria: Writability. ICOM 4036 Programming Languages

Language Evaluation Criteria. Evaluation Criteria: Readability. Evaluation Criteria: Writability. ICOM 4036 Programming Languages ICOM 4036 Programming Languages Preliminaries Dr. Amirhossein Chinaei Dept. of Electrical & Computer Engineering UPRM Spring 2010 Language Evaluation Criteria Readability: the ease with which programs

More information

Computer Programming I & II*

Computer Programming I & II* Computer Programming I & II* Career Cluster Information Technology Course Code 10152 Prerequisite(s) Computer Applications, Introduction to Information Technology Careers (recommended), Computer Hardware

More information

A+ Guide to Managing and Maintaining Your PC, 7e. Chapter 1 Introducing Hardware

A+ Guide to Managing and Maintaining Your PC, 7e. Chapter 1 Introducing Hardware A+ Guide to Managing and Maintaining Your PC, 7e Chapter 1 Introducing Hardware Objectives Learn that a computer requires both hardware and software to work Learn about the many different hardware components

More information

Practical Programming, 2nd Edition

Practical Programming, 2nd Edition Extracted from: Practical Programming, 2nd Edition An Introduction to Computer Science Using Python 3 This PDF file contains pages extracted from Practical Programming, 2nd Edition, published by the Pragmatic

More information

Chapter 8 Memory Units

Chapter 8 Memory Units Chapter 8 Memory Units Contents: I. Introduction Basic units of Measurement II. RAM,ROM,PROM,EPROM Storage versus Memory III. Auxiliary Storage Devices-Magnetic Tape, Hard Disk, Floppy Disk IV.Optical

More information

Computer Literacy. Hardware & Software Classification

Computer Literacy. Hardware & Software Classification Computer Literacy Hardware & Software Classification Hardware Classification Hardware is just another word for computer equipment; it is the physical parts of the computer that we can see and touch. All

More information

AQA GCSE in Computer Science Computer Science Microsoft IT Academy Mapping

AQA GCSE in Computer Science Computer Science Microsoft IT Academy Mapping AQA GCSE in Computer Science Computer Science Microsoft IT Academy Mapping 3.1.1 Constants, variables and data types Understand what is mean by terms data and information Be able to describe the difference

More information

Software. Managing Software Assets. Major types of software BIOS

Software. Managing Software Assets. Major types of software BIOS Software Managing Software Assets A software program is a series of statements or instructions to the computer. The process of writing or coding programs is termed programming; and the individuals who

More information

Introduction to programming

Introduction to programming Unit 1 Introduction to programming Summary Architecture of a computer Programming languages Program = objects + operations First Java program Writing, compiling, and executing a program Program errors

More information

Chapter 1. Dr. Chris Irwin Davis Email: cid021000@utdallas.edu Phone: (972) 883-3574 Office: ECSS 4.705. CS-4337 Organization of Programming Languages

Chapter 1. Dr. Chris Irwin Davis Email: cid021000@utdallas.edu Phone: (972) 883-3574 Office: ECSS 4.705. CS-4337 Organization of Programming Languages Chapter 1 CS-4337 Organization of Programming Languages Dr. Chris Irwin Davis Email: cid021000@utdallas.edu Phone: (972) 883-3574 Office: ECSS 4.705 Chapter 1 Topics Reasons for Studying Concepts of Programming

More information

CS 51 Intro to CS. Art Lee. September 2, 2014

CS 51 Intro to CS. Art Lee. September 2, 2014 CS 51 Intro to CS Art Lee September 2, 2014 Announcements Course web page at: http://www.cmc.edu/pages/faculty/alee/cs51/ Homework/Lab assignment submission on Sakai: https://sakai.claremont.edu/portal/site/cx_mtg_79055

More information

Unit A451: Computer systems and programming. Section 2: Computing Hardware 1/5: Central Processing Unit

Unit A451: Computer systems and programming. Section 2: Computing Hardware 1/5: Central Processing Unit Unit A451: Computer systems and programming Section 2: Computing Hardware 1/5: Central Processing Unit Section Objectives Candidates should be able to: (a) State the purpose of the CPU (b) Understand the

More information

New Mexico Broadband Program. Basic Computer Skills. Module 1 Types of Personal Computers Computer Hardware and Software

New Mexico Broadband Program. Basic Computer Skills. Module 1 Types of Personal Computers Computer Hardware and Software New Mexico Broadband Program Basic Computer Skills Module 1 Types of Personal Computers Computer Hardware and Software Basic Computer Skills Learning Objectives Acquire introductory familiarity with basic

More information

C Programming Dr. Hasan Demirel

C Programming Dr. Hasan Demirel C How to Program, H. M. Deitel and P. J. Deitel, Prentice Hall, 5 th edition (3 rd edition or above is also OK). Introduction to C Programming Dr. Hasan Demirel Programming Languages There are three types

More information

SECTION 1 - INTRODUCTION

SECTION 1 - INTRODUCTION SECTION 1 - INTRODUCTION OVERVIEW The LADDER Logic Configuration Utility facilitates configuring INFI 90 processor modules using ladder logic diagrams. Traditional logic rungs for contacts and coils can

More information

Computer Hardware HARDWARE. Computer Hardware. Mainboard (Motherboard) Instructor Özgür ZEYDAN

Computer Hardware HARDWARE. Computer Hardware. Mainboard (Motherboard) Instructor Özgür ZEYDAN Computer Hardware HARDWARE Hardware: the collection of physical elements that comprise a computer system. Bülent Ecevit University Department of Environmental Engineering 1. Case and inside 2. Peripherals

More information

Chapter 8: Installing Linux The Complete Guide To Linux System Administration Modified by M. L. Malone, 11/05

Chapter 8: Installing Linux The Complete Guide To Linux System Administration Modified by M. L. Malone, 11/05 Chapter 8: Installing Linux The Complete Guide To Linux System Administration Modified by M. L. Malone, 11/05 At the end of this chapter the successful student will be able to Describe the main hardware

More information

COMPUTER BASICS. Seema Sirpal Delhi University Computer Centre

COMPUTER BASICS. Seema Sirpal Delhi University Computer Centre COMPUTER BASICS Seema Sirpal Delhi University Computer Centre What is a Computer? An electronic device that stores, retrieves, and processes data, and can be programmed with instructions. A computer is

More information

================================================================

================================================================ ==== ==== ================================================================ DR 6502 AER 201S Engineering Design 6502 Execution Simulator ================================================================

More information

Computer Programming. Course Details An Introduction to Computational Tools. Prof. Mauro Gaspari: mauro.gaspari@unibo.it

Computer Programming. Course Details An Introduction to Computational Tools. Prof. Mauro Gaspari: mauro.gaspari@unibo.it Computer Programming Course Details An Introduction to Computational Tools Prof. Mauro Gaspari: mauro.gaspari@unibo.it Road map for today The skills that we would like you to acquire: to think like a computer

More information

PYTHON Basics http://hetland.org/writing/instant-hacking.html

PYTHON Basics http://hetland.org/writing/instant-hacking.html CWCS Workshop May 2009 PYTHON Basics http://hetland.org/writing/instant-hacking.html Python is an easy to learn, modern, interpreted, object-oriented programming language. It was designed to be as simple

More information

Course MS10975A Introduction to Programming. Length: 5 Days

Course MS10975A Introduction to Programming. Length: 5 Days 3 Riverchase Office Plaza Hoover, Alabama 35244 Phone: 205.989.4944 Fax: 855.317.2187 E-Mail: rwhitney@discoveritt.com Web: www.discoveritt.com Course MS10975A Introduction to Programming Length: 5 Days

More information

CHAPTER 7: The CPU and Memory

CHAPTER 7: The CPU and Memory CHAPTER 7: The CPU and Memory The Architecture of Computer Hardware, Systems Software & Networking: An Information Technology Approach 4th Edition, Irv Englander John Wiley and Sons 2010 PowerPoint slides

More information

Thomas Jefferson High School for Science and Technology Program of Studies Foundations of Computer Science. Unit of Study / Textbook Correlation

Thomas Jefferson High School for Science and Technology Program of Studies Foundations of Computer Science. Unit of Study / Textbook Correlation Thomas Jefferson High School for Science and Technology Program of Studies Foundations of Computer Science updated 03/08/2012 Unit 1: JKarel 8 weeks http://www.fcps.edu/is/pos/documents/hs/compsci.htm

More information

what operations can it perform? how does it perform them? on what kind of data? where are instructions and data stored?

what operations can it perform? how does it perform them? on what kind of data? where are instructions and data stored? Inside the CPU how does the CPU work? what operations can it perform? how does it perform them? on what kind of data? where are instructions and data stored? some short, boring programs to illustrate the

More information

COMPUTER HARDWARE. Input- Output and Communication Memory Systems

COMPUTER HARDWARE. Input- Output and Communication Memory Systems COMPUTER HARDWARE Input- Output and Communication Memory Systems Computer I/O I/O devices commonly found in Computer systems Keyboards Displays Printers Magnetic Drives Compact disk read only memory (CD-ROM)

More information

Fall 2009. Lecture 1. Operating Systems: Configuration & Use CIS345. Introduction to Operating Systems. Mostafa Z. Ali. mzali@just.edu.

Fall 2009. Lecture 1. Operating Systems: Configuration & Use CIS345. Introduction to Operating Systems. Mostafa Z. Ali. mzali@just.edu. Fall 2009 Lecture 1 Operating Systems: Configuration & Use CIS345 Introduction to Operating Systems Mostafa Z. Ali mzali@just.edu.jo 1-1 Chapter 1 Introduction to Operating Systems An Overview of Microcomputers

More information

I/O. Input/Output. Types of devices. Interface. Computer hardware

I/O. Input/Output. Types of devices. Interface. Computer hardware I/O Input/Output One of the functions of the OS, controlling the I/O devices Wide range in type and speed The OS is concerned with how the interface between the hardware and the user is made The goal in

More information

Introduction to Python

Introduction to Python Caltech/LEAD Summer 2012 Computer Science Lecture 2: July 10, 2012 Introduction to Python The Python shell Outline Python as a calculator Arithmetic expressions Operator precedence Variables and assignment

More information

An Introduction to MPLAB Integrated Development Environment

An Introduction to MPLAB Integrated Development Environment An Introduction to MPLAB Integrated Development Environment 2004 Microchip Technology Incorporated An introduction to MPLAB Integrated Development Environment Slide 1 This seminar is an introduction to

More information

High-Level Programming Languages. Nell Dale & John Lewis (adaptation by Michael Goldwasser)

High-Level Programming Languages. Nell Dale & John Lewis (adaptation by Michael Goldwasser) High-Level Programming Languages Nell Dale & John Lewis (adaptation by Michael Goldwasser) Low-Level Languages What are disadvantages of low-level languages? (e.g., machine code or assembly code) Programming

More information

Review questions for Chapter 9

Review questions for Chapter 9 Answer first, then check at the end. Review questions for Chapter 9 True/False 1. A compiler translates a high-level language program into the corresponding program in machine code. 2. An interpreter is

More information

LEARNING TO PROGRAM WITH PYTHON. Richard L. Halterman

LEARNING TO PROGRAM WITH PYTHON. Richard L. Halterman LEARNING TO PROGRAM WITH PYTHON Richard L. Halterman Copyright 2011 Richard L. Halterman. All rights reserved. i Contents 1 The Context of Software Development 1 1.1 Software............................................

More information

What is a programming language?

What is a programming language? Overview Introduction Motivation Why study programming languages? Some key concepts What is a programming language? Artificial language" Computers" Programs" Syntax" Semantics" What is a programming language?...there

More information