max232

珠海杰里2系列开发包,可以学习一下，因为是otp的片子，如果要看效果需要原厂的仿真工具(zhuhai jieli tech，51 OTP )

可以实现不通过的按键功能，模式切换，声道调节(Implementing the function of keys that do not pass)

基于51的C语言频率计，内涵仿真图，以实现空能(Based on 51 C-language frequency meter, meaning simulation diagram, in order to achieve air can)

基于STM32+ADS1232+keil温度压力采集(Temperature Pressure Acquisition Based STM32+ADS1232+keil)

基于stm8L的LCD1602液晶显示程序(LCD1602 LCD display program based on stm8L)

一个AVR的TWI双机通讯(主机：mega16从机：mega8)(The AVR TWI a two-machine communication (host: mega16 Slave: mega8))

此程序为4*4矩阵键盘，键盘自身不带电源电阻，八个接线，在程序中进行需进行软件拉高拉低以便按键扫描。 应用单片机为MSP430F5529。(4* 4 matrix keyboard without power resistors MSP430F5529)

说明：  STM32F103的独立看门狗程序实例，非常好用(STM32F103 independent watchdog program example, very useful)

又一种抢答器的AT89S51程序， SW1 SW2 SW3 SW4 用数码管显示最先按下的按键 01 02 03 04 并点亮对应灯： D2 D3 D4 D5 显示2S后退出。 同时发出 “嘟”一声。(Yet another answering device AT89S51 procedures, SW1 SW2 SW3 SW4 with digital display by pressing the button the first 01 02 03 04 and light the corresponding lamp: D2 D3 D4 D5 Display 2S exit. Also issued a " beep" sound.)

用mage128产生spwm驱动ir21094构成的逆变电源，小功率时波形正常。(Switching power supply system procedures mage128 parallel development board to achieve two-way current pro rata, the regulator output.)