stopwatch_if

有限差分波动方程不加边界条件二阶正演时间切片程序。(Finite difference wave equation without boundary conditions of second-order forward time-slicing procedure.)

说明：  STM32+AD7606串行程序，采用spi串行读取数据，单片机采用stm32f407(STM32+AD7606 serial program,using spi serial to read data,single-chip using stm32f407)

全自动可遥控旗帜升降系统以AVR单片机为核心，由PWM对电机进行变频调速，高精度光电编码器测速，闭环式电路控制。能够利用按键输入相应的指令控制旗帜的升降，还可以实现在特定位置停留的功能。利用LCD可以显示旗帜的实时高度和相应的控制命令，用LED指示旗帜是否处于半旗状态，具有语音提示报警功能，并可利用无线模块实现遥控功能，准确均匀地实现旗帜的升降(Automatic landing system can be remote-controlled flag to AVR microcontroller core of the PWM VVVF motor, high-precision optical encoder gun, closed-loop control circuit. Enter the appropriate button to take advantage of the command control of the rise and fall of the flag, but also can stay in the function of a specific location. LCD can display the banner of the use of real-time high and the corresponding control command, the LED is directed at the flag half-mast, and alarm functions with voice prompts, and the use of wireless remote control function module, to achieve uniform and accurate take-off and landing flag)

自识别避障灭火机器人，配备红外传感模块，PWM电机控制，火焰传感器。(Self identified obstacle avoidance and extinguishing robot, equipped with infrared sensing module, PWM motor control, flame sensor.)

Multisim10的DAC原理仿真演示。采用两个计数器级联成8位计数器，然后进行DAC转换。转换前后的结果分别用数码管和示波器显示。对理解DAC的原理非常有帮助。(This simulation contains two digital counters to generate 8-bit output to DAC, both digital number and analog values are dispayed. It is helpful to understand the principal of DAC.)

A simple servlet program that transforms the arabic numbers into romans and the romans from arabic

消毒柜产品,用VDF显示温度、消毒时间，还有各功能指示。用DS18B20采集温度，CS16312驱动VDF显示屏。(Sterilizer Products with VDF display temperature, sterilization time, there are various functional instructions. DS18B20 collection with temperature, CS16312 drive VDF display.)

奉献：2812的原理图 [日期：2005-11-29] 来源：侃单片机 作者：etiller [字体：大 中 小] ()

STM8L052 的LCD段码驱动显示程序。STM8的LCD驱动器驱动比较复杂，没有规律，显示段码8，需要每位对应，本程序使用三个数组和很小的程序实现段码显示。减少了程序量，提高了效率。(LCD Segment drive STM8L052 display program. STM8 LCD driver drive more complex, there is no law, code display section 8, each corresponding to the needs, the program uses three arrays and procedures to achieve a small segment display. Reduction program, improving the efficiency.)

利用Arduino实现读取MPU6050的DMP四元数(Arduino MCU reads MPU6050 use a DMP quaternion)