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说明：  基于MODBUS协议的单片机通信系统，上位机+下位机(MODBUS Protocol-based communication system microcontroller)

nrf preview dev kit Please read your package and describe it at least 40 bytes in English

说明：  适用51单片机的程序，可以进行气压测量进行自动控制继电器(51 MCU application procedures, pressure measurements can control relays)

使用AT89S52单片机核心芯片，通过c语言编程，使用delay函数控制led闪烁(Using AT89S52 microcontroller core chip, through the c programming language, using the delay function control led flashing)

说明：  用C语言编写STM32嵌入式程序，设计一个万年历系统，并用HX1230屏显示相关的时间信息。 基本要求： 1.C语言程序要求是模块化设计。 2.该万年历要求能显示时间（时、分、秒）、年月日及闹钟定时时间（分、秒）。 3.该系统由2-3个按键可调整显示的时间、年月日及闹钟定时时间，具体各个按键功能及编程方式自定。 4.该闹钟可以定时时间到，LED将发出提示闪光，且持续30s。 5.HX1230屏能驱动显示。 6.定时时间可被打断，即打断后恢复时继续计时。 7.设置闹钟报警功能； 8.利用STM32自带的温度传感器功能，使系统能显示当前环境温度值。(STM32 embedded program is written in C language, a calendar system is designed, and relevant time information is displayed on HX1230 screen. Basic requirements: 1. The requirement of C language program is modular design. The calendar requires that time (hours, minutes, seconds), year, month, day and alarm clock timing time (minutes, seconds) be displayed. 3. The system can adjust the display time, year, month, day and alarm clock timing time by 2-3 keys, and the function and programming mode of each key are self-determined. 4. The alarm clock can be scheduled to arrive, and the LED will give a prompt to flash, and lasts for 30 seconds. 5. HX1230 screen can drive display. 6. Timing time can be interrupted, i.e. when the interruption is resumed, the timing will continue. 7. Setting alarm function of alarm clock; 8. Using the temperature sensor function of STM32, the system can display the current environmental temperature)

单片机的关于通信方面的C 语言程序代码 很好的代码借鉴 。。。(single_MCU_communication)

matlab 中进行编程,对于一些基本语句的运用(matlab can show pictures，and some examples to help you draw the picture)

SONIX SN1917 测试代码，部分ADC,GIPA,CP设置(SONIX SN1917 test，about ADC,GIPA,CP ADN LCD OPTION)

说明：  pcf8591 AD转换程序，可以实现电压表功能，四路模拟输入，一路输出DA输出。(pcf8591 AD conversion process, you can achieve the voltmeter function, four analog inputs, one output DA output.)

msp430f149的adc采样(同时对八个点进行采样)!(msp430f149 the adc sampling (eight samples))