例题13.1 一元二次方程及出错信息

一些简单的小例子，书上的例题代码，简单易懂，谢谢(Some simple examples, the book s example code, easy to understand, thank you)

Lavxabhahab sjiius s d dwosisis dvvd

测试MPU6050实现上位机数据显示。希望大家可以参考一下。(Testing MPU6050 to realize data display of upper computer)

graph drower MFC with dynamic scaling y-axis

Microsoft does not open the API, such as open the Run dialog box

爱尔兰B公式的计算器，可以给定任意a，s，B中的2个，计算另一个，MFC(Ireland B formula calculator, you can determine the arbitrary a, s, B in two, another calculation, MFC)

数字转换工具，大写数字与小写数字的相互转换(Digital conversion tool, uppercase and lowercase digits digital conversion)

noc片上系统源代码，noc片上系统源代码，非常好的(noc-chip system source code, noc-chip system source code, very good)

附近是电缆的简易模型，利用PSCAD进行仿真，利用frequency model(PSCAD Cable frequency model)

钟面上的时针和分针之间的夹角总是在 0 ～180之间 ( 包括 0 和180 ) 。举例来说，在十二点的时候两针之间的夹角为 0 ，而在六点的时候夹角为180 ，在三点的时候为90 。本题要解决的是计算 12:00 到 11:59 之间任意一个时间的夹角。(The angle between the hour and minute hands of the clock face is always between 0 to 180 (including 0 and 180). For example, twelve o' clock, when the angle between the two pin 0, in the six o' clock when the angle is 180, three points for 90. This question must be resolved are the angle of the calculation of 12:00 to 11:59 any one time.)