Chapter 1 An Introduction to Computer Architecture

Chapter 6 Arrays
Chapter 23 Algorithm Efficiency and Sorting
Liang, Introduction to Java Programming, Sixth Edition, (c) 2007 Pearson Education, Inc. All rights reserved. 0-13-222158-6
Liang, Introduction to Java Programming, Sixth Edition, (c) 2007 Pearson Education, Inc. All rights reserved. 0-
Memory is to store data and program instructions for CPU to execute. A memory unit is an ordered sequence of bytes, each holds eight bits. A program and its data must be brought to memory before they can be executed. A memory byte is never empty, but its initial content may be meaningless to your program. The current content of a memory byte is lost whenever new information is placed in it.
1
Objectives
To review computer basics, programs, and operating systems (§1.2-1.4). To represent numbers in binary, decimal, and hexadecimal (§1.5 Optional). To understand the relationship between Java and the World Wide Web (§1.6). To know Java’s advantages (§1.7). To distinguish the terms API, IDE, and JDK (§1.8). To write a simple Java program (§1.9). To create, compile, and run Java programs (§1.10). To understand the Java runtime environment (§1.10). To know the basic syntax of a Java program (§1.11). To display output on the console and on the dialog box (§1.12).

Chapter 1: Introduction for ComputerQuick Quiz 11.The smallest and most basic data item in a computer is a____________________; it is really a switch that can be either open (0) orclosed (1).Answer: bit2.What is the ALU of a computer?Answer: The Arithmetic and Logic Unit (ALU) of a computer performs all of the computations, such as addition, subtraction, comparisons, and so on, that a computer provides.3.What is the control unit of a computer?Answer: The control unit of a computer directs and monitors the overalloperation of the computer.4.A(n) ____________________ allows a computer to read or write any one fileor program independent of its position on the storage medium.Answer: direct access storage device (DASD)direct access storage deviceDASDQuick Quiz 21.What is an assembly language?Answer: Programming languages that use the substitution of word-likesymbols, such as ADD, SUB, MUL, for the binary opcodes, and both decimal numbers and labels for memory addresses are referred to as assemblylanguages.2.The program that translates a high-level source program as a complete unitbefore any individual statement is executed is called a(n)____________________.Answer: compiler3.What is a linker?Answer: A linker combines additional machine language code with the objectprogram to create a final executable program.4.When English phrases are used to describe an algorithm (the processing steps),the description is called ____________________.Answer: pseudocodeQuick Quiz 31.What is the software development process?Answer: The technique used by professional software developers forunderstanding the problem that is being solved and for creating an effectiveand appropriate software solution is called the software development process.2.When writing a program, a(n) ____________________ structure provides thecapability to make a choice between different instructions, depending on theresult of some condition.Answer: selection3.When writing a program, a(n) ____________________ structure involvessummoning into action specific sections of code as they are needed.Answer: invocation4.What is a repetition structure?Answer: When writing a program, a repetition structure, which is also referred to as looping and iteration, provides the ability for the same operation to berepeated based on the value of a condition.。

manufacturing
A WORLD OF COMPUTERS
• Computers are everywhere
WHAT IS A COMPUTER?
• A computer is an electronic device, operating under the control of instructions stored in its
• Enables a computer to send and receive data, instructions, and information to and from one or more computers or mobile devices
ADVANTAGES AND DISADVANTAGES
NETWORKS AND THE INTERNET
• A social networking Web site encourages members to share their interests, ideas, stories,
Differentiate among types, sizes, and
functions of computers in each category
Describe the role of each element in an
informationຫໍສະໝຸດ systemExplain how home users, small office/home office
computers
Define the term, computer, and describe the relationship between data and information

• Errors detected at any step will prevent execution of following steps.
Copyright © 2012 Pearson Education, Inc.
From a High-Level Program to an Executable File
Copyright © 2012 Pearson Education, Inc.
Machine Language
• Although the previous algorithm defines the steps for calculating the gross pay, it is not ready to be executed on the computer.
Copyright © 2012 Pearson Education, Inc.
Integrated பைடு நூலகம்evelopment Environments (IDEs)
• An integrated development environment, or IDE, combine all the tools needed to write, compile, and debug a program into a single software application.
Main Memory
• Addresses – Each byte in memory is identified by a unique number known as an address.
Copyright © 2012 Pearson Education, Inc.
Main Memory