Архив

说明：  Freemarker-2.3.16 API.chm英文版，非常详细(Freemarker-2.3.16 API.chm)

H桥是电机驱动中的重要部件 在系统的调试中，H桥的调试是很重要的一环，这是长时间调试总结的，愿意和大家分享-H bridge motor driver is an important component in the system debugging, H Bridge Debugging is a very important aspect, which is summed up a long time debugging, and is willing to share

锁相环模块：熟悉锁相环内部的内部结构，工作原理。(PLL module: familiar with the internal structure and working principle of PLL.)

Js弹性缓冲运动动画演示示例，反弹动画网页例子，实现了固定范围反弹 、范围渐变反弹、自定范围反弹，可指定范围内反弹运动，可演示延迟、加速、减慢等动画速度。

全世界的国家级别shp文件,可用于空间叠加分析，或其他地图的底图(the world map for shp)

用JAVA写的一个功能齐全的小型模拟器游戏，为一个实用型APPLET程序，算法超经典-using Java to write a small subset of functional simulator game for a practical APPLET procedures, algorithm-classic

protel 　　ＤＸＰ　　　实 例 ３

proteus上的双稳态电路模型，用作单键开关信号控制已应用于多个电路中 -proteus the bistable circuit model for 1-touch switching signal control has been applied to a number of circuit

数根 数也有根吗？有！数根就是把一个数的各个数位上的值相加，直到得到一个一位数为止。请你编写一个程序来计算任意数N（0≤N≤1000000000000）的根。 输入： 输入有多个案例。每一个案例为一行，每行只有一个整数N。当输入的N是-1时，输入结束。 输出： 每一个案例输出一行。每行只有一个数字，就是N对应的数根。 Sample input 39 -1 Sample output 3-Number of root number also has roots do? There is! The number of roots is to a number of different values on the digital sum until they have been a number of up to one. Please write a program to calculate an arbitrary number N (0 ≤ N ≤ 1000000000000) roots. Input: Enter a number of cases. Each case for the line, each line is only an integer N. When the input of N is-1, the input end. Output: the output line of each case. There is only one number per line, that is, N corresponds to the number of roots. Sample input 39-1 Sample output 3

说明：  从地球到火星的模拟轨道运算及以燃料消耗为目的的优化。(Orbit simulation and optimization from earth to Mars.)