02-filters_and_filtering

说明：  使用VHDL语言写的AVR单片机IP核， 可以直接使用，已经经过验证， 十分珍贵哦(Written in VHDL language using the AVR microcontroller IP core, can be used directly, has proven very valuable oh)

该程序为C8051F020型单片机用于采集频率信号和模拟量信号以及对采集后的信号进行逻辑判断(This program is for C8051F020 Single Chip and is applied to collect frequency signal and analog signal as well as judge these signals logically. )

控制蜂鸣器pic18单片机程序,测试通过，已批量生产。(Pic18 microcontroller program to control the buzzer)

说明：  单片机驱动3310 lcd显示屏的c程序，单片机与屏的线路连接可以参见程序中的宏定义。程序写得很精简，但是很好用。(Microprocessor 3310 LCD display c procedures, SCM and the screen can see the line connecting the procedures macro definition. Very streamlined procedures, but is useful.)

相应的数字同步显示在数码管上，数码管显示 1-5速度等级，数字越大，速度越小(Corresponding digital synchronous digital tube, digital tube display to 1-5 speed rating, the larger the number, the smaller the speed)

可以用来参考RRN8302B校表设计，基于51系列单片机，可参考使用(Can be used for reference RRN8302B calibration design,Based on 51 series MCU, it can be used for reference.)

51单片机MODBUS通信一例 ，读者可以通过单片机与一切具有MODBUS通讯协议的智能设备进行通信(51 single MODBUS communication example, the reader can communicate with all intelligent devices through the SCM has MODBUS communication protocol)

飞机刹车时的PID程序，控制滑移率，保证不打滑(PID at the time of the aircraft braking procedures and control slip rates,guarantees of non-skid)

实现一基于单片机的电子密码锁的设计,电子密码锁的设计主要由三部分组成：矩阵键盘接口电路、密码锁的控制电路、最小系统。另外系统还有LED提示灯，报警蜂鸣器等。(Realization of a microcontroller based electronic password lock design, the design of electronic password lock consists of three parts: matrix keyboard interface circuit, password lock control circuit, the minimum system. In addition, the system also has LED tips, alarm buzzer, etc..)

用c8051f320单片机,任选两个IO口进行模拟IIC操做,用软件IIC对加速度芯片MXC6020进行读写操作(IIC接口)(With c8051f320 Singlechip, optional two IO simulation IIC mouth fuck to do with software acceleration chip IIC on MXC6020 to read and write operations (IIC interface))