摘要： 缘起 偶然，借到块DE2，开始学习Verilog HDL，也是从语法看起，照着书上敲代码，仿真，做lab，下载，貌似入门了，但总是不确定，总是觉得不能把握什么。偶然看到akuei2的《Verilog哪些事儿--建模篇》V4，觉得很好，遂想记录“打谱”的点滴--是为再笔记。Lab 1 永远的流水灯 这名字是直接拿来的，起的太好了，不多言。 这个实验想阐述并行的思想，用4个类似的模块建立1个并行操作的流水灯模块。每隔100ms流动一下。代码：led0_module.v 1 /** 2 * File name: led0_mocule.v 3 * 4 */ 5 6 module led0_modul 阅读全文

摘要： 1. 缘起 会了点HDL和数字逻辑基础后，操作DE2上的开关，led，7断码数码管都没啥问题，但至此好像也只能玩玩n年前教科书上都有的lab，啥数字钟，汽车尾灯，交通灯之类。浪费了DE2的资源，未免对不起DE2的价钱。板子上最明显的东东莫过于那个1602的LCD了，遂想玩玩这个东东。伟大的教育培养的惯性思维：照书本来，狗来狗去，国产的似乎就只有一本关于DE2的书（上交的一个博士写的），拜读一下，大半是DE2附带的光盘lab的中译版，。。。总之，DE2的玩法，没在这本书里找到，估计又是应付国内职评的产物。没期望过，所以没啥失望，好在web上tw的教育网页可打开，那边的学生都推荐OO无双说过的那两 阅读全文

摘要： Assignment 2: Simple Java ProgramsProblem 1: Brick Pyramids 这题要求画个图1所示的类似金字塔的东东，主要是使用getWidth()，和getHeitht(). 图 1 1 /*File pyramid.java 2 * this program draws a pyramid 3 * Programming exercise 1 cs106a stanford: 4 * Assignment #2: Simple Java Programs 5 * Write a GraphicsProgram subclass that draws 阅读全文

摘要： Lesson 16 – Create main Method and JAR FileIntroduce main methodWrite a main methodRun MyLibrary as Java applicationExport to JAR file and run from Windows在MyLibrary.java里添加main method。 1 public static void main(String[] args) { 2 // create a new MyLibrary 3 MyLibrary testLibrary = new MyLibrary(&qu 阅读全文

摘要： Lesson 15 – Finish MyLibrary MethodsCreate test for getAvailableBooksCreate getAvailableBooksCreate getUnavailableBooks 1 package org.totalbeginner.tutorial; 2 3 import java.util.ArrayList; 4 5 import org.omg.CORBA.PUBLIC_MEMBER; 6 import org.totoalbeginner.tutorial.Person; 7 8 import junit.framewor 阅读全文

摘要： Lesson 14 – Finish checkOut MethodWrite getBooksForPerson methodIntroduce for each loopIntroduce logical ‘and’ operator &&NullPointerException errorsComplete checkOut Method 1 package org.totalbeginner.tutorial; 2 3 import java.util.ArrayList; 4 5 import org.totoalbeginner.tutorial.Person; 6 阅读全文

摘要： Lesson 13 – Continue checkOut MethodTest checkOut, checkIn methodsFix compiler error – misplaced {}Add test for maximum booksCreate test for getBooksForPerson() methodRefactoring – extrack method 1 package org.totalbeginner.tutorial; 2 3 import java.util.ArrayList; 4 5 import org.omg.CORBA.PUBLIC_ME 阅读全文

摘要： Lesson 12 – Create checkOut, checkIn MethodsCreate test for checkOut, checkIn methodsWrite checkout methodIntroduce if / then / else syntaxIntroduce boolean methodWrite checkIn method1. testCheckOut Method Test both the checkOut and checkIn methodsCheck Out a bookCheck Out second bookCheck in a book 阅读全文

摘要： Lesson 11 – Create first methods in MyLibrary classCreate test method for addBook, removeBook methodsCreate addBook, removeBook methods and testCreate addPerson, removePerson methodsIntroduce Eclipse refactoring – move local variable to field 1 package org.totalbeginner.tutorial; 2 3 import java.uti 阅读全文

摘要： Lesson10 – Start on MyLibrary ClassCreate MyLibrary Test JUnit testCreate testMyLibrary to test MyLibrary constructorCreate MyLibrary constructorIntroduce instanceof operatorIntroduce assertTrue method 1 package org.totalbeginner.tutorial; 2 3 import java.util.ArrayList; 4 5 import junit.framework.T 阅读全文

摘要： Lesson 09 – MyLibrary Class and ArrayListHow can we hold books, etc. in a collection?MyLibrary object to hold Person & Entry objectsIntroduce ArrayList in scrapbookIntroduce Java GenericsMethod chaining使用ArrayList前，要添加java.util. 1 ArrayList<Book> list = new ArrayList<Book>(); 2 3 Boo 阅读全文

摘要： Lesson 08 – Add Person to Book ClassCreate a relationship between the Book class and the Person classTest getPerson methodCreate JUnit Test Suite1. 本课的任务目前，已创建Person class 和 Book class。需要显示哪个人借了哪本书。要创建Book 和Person之间的关联。仍用test-first方法。2. 步骤 打开BookTest,添加method.创建testGetPerson() method.创建getPerson() m 阅读全文

摘要： Lesson 07 – Create Book ClassCreate BookTest before creating Book classTest Book constructorCreate get and set methods1. 新建一个JUnit test case, name为BookTest, Class under test为空，因为尚未建Book class.2. 建立Book class, 注意目录为src。3. Test-first approach to Book classCreate BookTest class.Create testBook() method 阅读全文

摘要： Lesson 06 – Using Test-First Development in EclipseUse test-first approach to write the Person toString() methodMethod overridingField Hiding1. toString() methodinherited from Object classreturns a String representation of the objectnormally create for every class2. Test-driven developmentThink abou 阅读全文

摘要： Lesson 05 – JUnit Testing ContinuedTest Person class – part 2Create test methods for constructor, getName, and getMaximumBooksStatic methods 这里的assertEquals是Static method.当其在所属的Class内部时，可略写Class。 1 package org.totalbeginner.tutorial; 2 3 import org.totoalbeginner.tutorial.Person; 4 5 import junit.fr 阅读全文

摘要： Lesson 04 – JUnit Testing in Eclipse, Part 1Create test source folderCreate Person Test classRun first JUnit test1. Scrapbook的优/缺点Great for exploring new Java classes and trying commmands.Does not let you automate testing2. Unit Testing的特点Automated testing of all methodsVery valuable when making cha 阅读全文

摘要： Lesson 03 – Use Eclipse ScrapbookIntroduce Eclipse ScrapbookIntroduce Java expressions, statementsDiscuss Java packagesCreate Person Object in Scrapbook1. 打开Scrapbook RC project / New / other / Java / Java Run/Debug / Scrapbook.page / Next / MyScrapbook (name) / Finish.2. Scrapbook的作用 Scrapbook allo 阅读全文

摘要： Lesson 02 – Add Methods To ClassIntroduce Eclipse Views and PerspectivesIntroduce Eclipse user interface – drag / drop, cnntext menus, helpAdd get and set methods to Person class1. 自动提示或补充标识符。 英文版的系统用Ctrl+Space， 中文版的系统用Alt+/。2. Parameters and Fields.3. this this = the current object4. Class members 阅读全文

摘要： 偶然搜到Mark Dexter的这个免费视频(http://eclipsetutorial.sourceforge.net/totalbeginner.html)。够傻瓜，够直观。慢慢习之。Lesson 01 – Create Your First Java ClassCreate Java project in EclipseCreate Java package Introduce classes and objects, naming conventionsWrite a simple Java class (Person)Create Java project in Eclipse . 阅读全文

摘要： ch04 Programming Exercise1. 1 /** 2 * File: Ex4_1.java 3 * ---------------- 4 * This program is to generate the lyrics . 5 * 6 * @author Administrator 7 * 8 */ 9 import acm.program.*;10 11 public class Ex4_1 extends ConsoleProgram {12 13 public void run() {14 15 for (int i=n; i>0; i--){16 println 阅读全文