局部变量用于自锁

说明：  Labview battery tester

基于labview的双通道数据采集处理系统，双界面，含置滤波器（巴特沃斯，切比雪夫可选），含加窗数据处理，支持数据记录并回放，用了信号源仿真，只需把信号源换成输入即可(Labview-based dual-channel data acquisition and processing system, dual interface, including home filters (Butterworth, Chebyshev optional), containing windowed data processing, data recording and playback support, with a source simulation, simply put input signal source can be replaced)

labview中实现前面板的打印，打印格式为PDF.通过设置VI的属性实现报表打印(achieve labview front panel printing, print format is PDF. realized by setting the properties of print statements VI)

通过labview的PID功能块对伺服电机进行闭环控制(The PID function block via labview servo motor closed-loop control)

基于Labview的电子钢琴设计，通过对声音频率的设置，实现发声及演奏功能(Labview-based electronic piano design, set to the frequency of the sound, vocal and performance features)

labview编写的 创建和读取Excel文件，是和初学者学习借鉴。(The creation and reading of Excel files by LabVIEW is a reference for beginners to learn.)

说明：  LabVIEW调用动态链接库之参数问题！实现LAB与其他语言的连接(LabVIEW called dynamic link library, Parametric problem! LAB realization, and other languages link! !)

详尽的介绍了LabVIEW中数据库工具包在数据库连接设计中的应用(Detailed description of the LabVIEW Database Toolkit Database Connection Design)

Introduction of NI data acquisition hardware 1. Basic components of a complete data acquisition system 2. NI provides data acquisition hardware products based on which platforms and which application areas they are suitable for respectively. 3. What important parameters should be paid attention to in the process of hardware selection of data acquisition equipment

一个LABVIEW登陆界面，可以实现到主界面的跳转(A LABVIEW login screen, you can achieve a jump to the main interface)