ad-pwm

本程序利用51单片机的定时器中断产生时间信号，同时具有通过按键调节时间的功能，还可设置闹钟(This procedure using 51 single-chip timer interrupt time signal, but also has the functions via buttons adjust the time, but also set the alarm)

8x8x8光立方全套资料，含有源码，电路图，PCB(8x8x8 light cube full set of data containing the source code, schematics, PCB)

16C954芯片，是一个能够执行串口扩展的芯片，利用该芯片，最多能扩展出4个串口，解决了一般性单片机串口不够用的问题。该源码提供了16C954驱动，利用此驱动，可以快速扩展其他串口功能。(16C954 chip, is capable of performing a serial port expansion chip, using the chip, up to four serial ports can be extended out to solve the general problem of single-chip serial enough. The source provides the 16C954 driver, the use of this driver, you can quickly expand to other serial port functions.)

加速度计校准实验 动态立方体演示实验 数字拼图游戏实验(Accelerometer calibration experiment Dynamic cube demonstration experiment Experiment with number puzzles)

基于stm32USB模拟鼠标移动，演示用键盘的S1,S2,S3,S4模拟鼠标的上下左右移动。(Based on stm32, USB mouse, demonstration of the keyboard S1, S2, S3, S4 simulated mouse from top to bottom and move around.)

说明：  I2C_SHT21 温湿度传感器测量 I2C 读取SHT21 温湿度传感器 SHT21驱动库有两种操作模式，适合不同操作 自动转换测量模式： 1：启动任意一个测量指令,例如测量温度执行 measureT(); 2：延时200ms 3：读取测量后的数值, autoMeasure(float * th); 该函数读取测量得出的数据，并根据数据的类型进行转化，再自动启动下一个类型的测量 指定转换测量模式： 1：先启动一次测量,例如测量温度执行 measureT(); 2：延时200ms 3：读取测量后的数值,例如读取温度执行readT();(2C_ SHT21 temperature and humidity sensor measurement I2C read SHT21 temperature and humidity sensor SHT21 driver library has two operation modes, which are suitable for different operations Automatic conversion of measurement mode: 1: Start any measurement command, for example, measure the temperature and execute measure(); 2: Delay 200ms 3: Read the measured value and Automeasure (float * th); This function reads the measured data, converts it according to the data type, and then automatically starts the next type of measurement Specify the conversion measurement mode: 1: Start a measurement first, for example, measure the temperature; 2: Delay 200ms 3: Read the measured value, for example, read the temperature and execute readt();)

A quick brown fox jumps over the lazy dog. hahahaha

gccavr书籍内容包含gcc应用安装及对avr下载说明和电路的配置(gccavr books contain the installation and application of gcc right avr download notes and circuit configuration)

说明：  设计一个VI来测量温度（保留2位小数），每隔0.25秒测一次，共测定10秒。在数据采集过程中，VI将在波形Chart上实时地显示测量结果。采集过程结束后，在Graph上画出温度数据曲线,并且把测量的温度值以文件的形式存盘， 使用记事本打开文件检查结果是否正确。 存盘格式为： 点数 时间(S) 温度值(度) 1 0.25 78.56 2 0.50 85.32(Design a VI to measure the temperature (keep two decimal places), measured once every 0.25 seconds, 10 seconds were measured. In the data collection process, VI will display the measurement results in real time on the waveform Chart. After the acquisition process, the temperature data in the Graph draw curves, and the temperature measured in the form of document archiving, Use Notepad to open the file to check the result is correct. Save format: Points Time (S) temperature (degrees) &nbsp 1 0.25 78.56 &nbsp 2 0.50 85.32)

说明：  串口通信C8051F120 实现，1起始位，1停止位，无校验(Serial Communication C8051F120 Realization, 1 Start Bit, 1 Stop Bit, No Check)