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51单片机中利用PCF8591进行D/A转换在示波器中显示三角波(51 MCU PCF8591 using the D/A converter in the oscilloscope display triangular wave)

给初学89c51朋友一个蜂鸣器奏乐(生日快乐)的程序(For beginner 89 c51 friend a buzzer playing music (happy birthday) program)

STM32的相应程序用于驱动电容屏LCD_NT35510,可按RGB565显示汉字与图片(STM32 corresponding program for driving a capacitive screen LCD NT35510, RGB565 can display Chinese characters and pictures)

说明：  STC15系列库函数与例程测试版 ADC 定时器 串口通信 PCA EEPROM等(STC15 Series Library Function and Routine Test Edition ADC Timer Serial Communication PCA EEPROM, etc.)

按键控制流水灯，使用左移右移控制流水灯闪烁，实在不知道说啥了(Key control water lamp, use left shift right to control the flow of water lamp flashing, really do not know what to say)

说明：  freettos的最小系统移植，亲测能编译成功，使led灯周期闪烁(freertos ,stm32f103,keil5,c++)

HT66F50单片机完整程序，测试通过。(HT66F50 SCM complete program test.)

EASi Line Assembly Technology HeartRate Give-away C Source Code

以8051为基础的有键盘；有液晶显示器；有传感器前置调理电路的数据采集器控制程序。(8051-based data acquisition control program)

CHAPT05CHAPT05.CPP 16-Bit test program for the initelligent Digi board. CHAPT05CHAPT05.EXE 16-Bit executable of the test program CHAPT05CHAPT05.MAK A makefile for Borland or Microsoft C++ CHAPT05DIGI.CPP Implementation of the Digiboard class CHAPT05DIGI.H Declaration of the Digiboard cla