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这是一本介绍PYTHON编程的好书，其中内容详实，举例经典，且有详细的代码可供参考，极为适合初学者使用。(This is an introduction PYTHON programming books, including informative, the classic example, and there is a detailed code for reference, very suitable for beginners to use.)

说明：  Normak映射分岔图，简单明了，非常适合初学者学习(Normak bifurcation diagram)

51单片机波特率计算器,可以输入波特率计算初值,也可初值计算波特率,很好用的,节省时间-51 MCU baud rate calculator, you can enter the baud rate calculation of the initial value can also be calculated initial baud rate, good use and save time

说明：  基于Qt5.9.1的能够进行简单加减乘除运算的qt计算器(Qt calculator capable of simple addition, subtraction, multiplication and division)

delphi使用dll的方法详解-delphi use of the method for Hi dll

雷老虎短信平台的开发该源码可以连接雷老虎短信平台发送短信查询信息等

说明：  嵌入式开发中常用的hex格式互相转化小工具(Mutual conversion of hex format in embedded development)

EWB做的多功能数字钟 由振荡器输出稳定的高频脉冲信号作为时间基准，经分频器输出标准的秒脉冲，秒计数器满60向分计数器进位，分计数器满60向小时计数器进位，小时计数器按“12翻1”规律计数，计数器经译码器送到显示器；计数出现误差可用校时电路进行校时、校分、校秒， 可发挥部分：使闹钟具有可整点报时与定时闹钟的功能。 -EWB done by the multi-function digital clock oscillator output stable high frequency pulse signal as a time reference. Frequency Divider output by the standards of seconds pulse, aged 60 seconds to counter-counter rounding, Counter-to-60-hour counter rounding, by the Counter-hour "12 over a" law count, Counter by the decoder to display; Counting errors school circuit can be used for schools, school hours, school seconds to play : The alarm clock can be made with whole point regular alarm clock and timer functions.

说明：  用VB实现3乘3的拼图游戏，以前VB课程设计的时候做的，用了一个叫PictureClip的控件。(Using VB to achieve 3 by 3 puzzle, before, when VB program to do the design, uses a control called PictureClip.)

实现GPS网平差，基于C++的源代码，对导航、测绘、工程类技术人员有帮助。(GPS network adjustment, based on the C++ source code, navigation, mapping, engineering technology helps.)