1finite-automata-weak-reversible

本系统以直流电流源为核心，AT89S52单片机为主控制器，通过键盘来设置直流电源的输出电流，设置步进等级可达1mA，并可由数码管显示实际输出电流值和电流设定值。本系统由单片机程控输出数字信号，经过D/A转换器（AD7543）输出模拟量，再经过运算放大器隔离放大，控制输出功率管的基极，随着功率管基极电压的变化而输出不同的电流。单片机系统还兼顾对恒流源进行实时监控，输出电流经过电流/电压转变后，通过A/D转换芯片，实时把模拟量转化为数据量，再经单片机分析处理， 通过数据形式的反馈环节，使电流更加稳定，这样构成稳定的压控电流源。实际测试结果表明，本系统输出电流稳定，不随负载和环境温度变化，并具有很高的精度，输出电流误差范围±5mA，输出电流可在20mA~2000mA范围内任意设定，因而可实际应用于需要高稳定度小功率恒流源的领域。(the system to DC current source to the core, MCU AT89S52 main controller, through the keyboard to set up DC power supply output current, set up to 1mA Stepping grades, digital control can be shown by the actual output current value and current setting. The system consists of programmable microcontroller digital signal output, after the D/A converters (AD7543) analog output. After Operational Amplifiers isolation, amplification and control of the output power base. With the power of the base voltage changes in the output current. SCM system also takes on the constant current source for real-time monitoring, after current output current/voltage changes, the A/D converter chip, real-time conversion from analog to the volume of data and then analyzed by the MCU, through data link in the )

基于51单片机的PT2314音频功放程序，可实现MIC和音频输入切换及音量音调控制，并用5110显示(Based on 51 single-chip audio amplifier PT2314 program can achieve MIC and audio input switching and volume tone control and display with 5110)

ekf，即扩展卡尔曼滤波器，对于研究电机滑膜控制有所帮助(ekf, ie, extended Kalman filter, the research motor control synovial helpful)

LsFileExplorer28.pas(ver 2.80)包含三个部分: (1)TLsDirTree21:简单但功能完全的目录树视图控件(包含基本文件列表视图).它支持在目录中创建、删除和重命名操作. (2)TLsDirTreeCombo28:树视图专用的ComboBox. (3)TLsFileListView28:具有快捷菜单的文件列表视图控件封装了如打开、查看、剪切、复制、粘贴、删除、发送到、重命名等文件管理操作. (LsFileExplorer28.pas (ver 2.80) contains three parts : (a) TLsDirTree21 : simple but complete directory tree view control (containing basic documents list view). Its support for the directory to create, delete and rename operation. (2) TLsDirTreeCombo28 : tree View for the ComboBox. (3) TLsFileListView28 : quick with the paper menu ClistCtrl Packaging, a case is opened, View, cut, copy, paste, delete, send to rename such as document management operations.)

自动寻找指定WIFI ssid并填入密码，自动打开wifi连上网。(Automatically find WIFI specified ssid and fill in the password, automatically open WIFI even surf the Internet.)

51单片机的8155扩展的proteus仿真，完成数码管显示，LED灯控制，键盘控制等多种功能，仅供参考(51 MCU 8155 extended proteus simulation, the completion of digital tube display, LED light control, keyboard control and other functions, for reference purposes only)

stm32与铭正同创液晶屏通讯例程，包含数字触摸按键，按钮等例程(stm32 and Ming positive Genesis LCD screen communications routines, including digital touch keys, buttons and other routines)

新唐nano100参考示例代码，很有参考价值 (New tang nano100 reference sample code, is of great reference value)

说明：  HR202设计思路及程序电路 AD元件图3D图(Design Thought and Programming Circuit of HR202)

基于STM32步进电机控制程序，可以随意控制步进电机转动角度。(Based on STM32 stepper motor control program, you can control the stepper motor rotation angle at any rate.)