屏幕保护程序

一个小小的游戏！为自己找回一些些童年的回忆！仅此而已！ -A little game! For their own back to some of those childhood memories! Nothing more!

锁相的目的和作用、基本原理、如何实现、控制器参数设计、仿真验证 。(The purpose and function of phase locking, basic principles, how to achieve, controller parameter design, simulation verification .)

说明：  ZeosLib 7.2.6.1 para Delphi/Lazarus

对每一行为一个离散信号的信号矩阵进行FFT，输出频域信号矩阵和采样频率(FFT of the signal matrix, and the output is the spectrum matrix and the sampled frequency)

根據使用者輸入的數值,來判斷出數值為奇數或是偶數(According to the value input by the user to determine the value of an odd or even number)

支持微信、支付宝、QQ钱包的扫码支付，可以用作打赏赞助支付的网站系统，支持后台查看实时收入情况，系统完全开源，无后门，直接上传自己服务器进行安装即可！(Support WeChat, Alipay, QQ wallet scan code payment, can be used to reward sponsorship payment website system, support the background to view real-time income, the system is completely open source, no backdoor, upload directly to their servers to install it!)

说明：  CSS3 3D效果网站导航菜单是一款3D立体效果的纯CSS3网站导航代码。(CSS3 3D effect website navigation menu is a pure CSS3 website navigation code with 3D effect.)

说明：  黑莓开发大全上篇,每个黑莓开发者都必须具备的教材,第一次发布(BlackBerry Development Daquan Part, every BlackBerry developer must have the textbooks, the first time release)

用tps40057构成恒压源,运用stm32的内置ad和da进行pid控制(Constant Voltage Source Constructed by Tps40057)

说明：  在交流微电网中双向DC/DC变换器中PQ下垂控制(PQ droop control in bidirectional DC/DC converter in AC microgrid)