i2c总线协议

基于MSP430G2553来实现串口通讯，可以用上位机和下位机进行通讯(Based MSP430G2553 to achieve serial communication, you can use upper and lower machine communication)

松翰SN8F5702_PWM_移动电源方案(Songhan SN8F5702_PWM_Mobile Power Supply Scheme)

设计一个以AT89S51单片机为核心的数字电子钟控制器，实现电子钟的时间、日期交替显示、闹钟功能，并可通过按钮开关或键盘切换显示内容、调整参数、设置闹钟，在单片机实验板上模拟调试实现控制器的功能。(To design a digital electronic clock with AT89S51 as the core controller, realize electronic clock time, date, alternate display, alarm clock function, and can through the button or keyboard switch display content, adjust parameters, set the alarm clock, on the single chip microcomputer experiment board simulation debugging, we can realize the function of the controller.)

S变换电能质量检测代码，可以实现电压暂升暂降中断等的扰动检测(power quilty detection using S transform)

说明：  PM2.5激光传感器模块SDS系列使用手册(Handbook of SDS Series for PM2.5 Laser Sensor Module)

SI4463的详细英文资料 SI4463 detailed information in English(SI4463 detailed information in English SI4463 detailed information in English)

HCS08 emulator information: information in detail, with reference to fully produce their own.

使用BitBlt加载位图，利用定时器进行计时，绘制数字时钟(Use BitBlt to load a bitmap, use a timer for timing, rendering digital clock)

说明：  入门教程，给单片机初学者43个实验教程，(Introductory tutorials, 43 experimental tutorials for beginners of microcontroller.)

1.由上位机发送1给单片机时，蜂鸣器以400ms频率发声，发2时以200ms频率发声，发3时以100ms频率发声，发4时关闲蜂鸣器。 1.以2400bps从计算机发送任一字节数据，当单片机收到该数据后，在此数据前加上一序号然后连同此数据一起发送至计算机，当序号超过255时归零。 2.以16进制发送一个0-65536之间的任一数，当单片机收到后在数码管上动态显示出来，波特率自定。 3. 用AD以1HZ的频率采集模拟信号，然后转换成数字量，再将其以1200bps发送到计算机，在计算机上显示。 4.按下矩阵键盘第一行时以1200bps发送，1，2，3，4，第二行时以2400bps发送5，6，7，8，第三行以4800bps发送，9，10，11，12，第四行以9600pbs 发送，13，14，15，16. (1. From the PC to send a single chip, the buzzer to 400ms frequency of sound, made 2 to 200ms frequency sound, made from 3 to 100ms frequency sound, made 4 free buzzer off. 1. To 2400bps from the computer to send any byte of data, when the microcontroller receives the data in this data with a serial number before then sent along with the data to the computer, the serial numbers when more than 255 zero. 2. To send a 16-hexadecimal any number between 0-65536, when the microcontroller in the digital receipt is displayed on a dynamic, custom baud rate. 3. 1HZ with the frequency of AD in order to capture analog signals, then converted to digital, and then send it to 1200bps to the computer, the computer display. 4. Press to 1200bps matrix keyboard to send the first row, 1,2,3,4, 5,6,7,8 the second row to 2400bps send the third line to 4800bps send, 9,10,11,12 , the fourth line to 9600pbs send, 13,14,15,16. )