8路AD采集系统，数字电压表，采用ADC0809模数转换芯片，单片机控制的数字采集系统...

232模拟串口的程序，给需要的朋友-232 serial simulation procedure, to the needs of Friend

nrf905通信 基于rs232-nrf905 based RS232 communication

12864标准程序，方便大家学习，里面有两个12864的显示程序-err

430的SD16模块扩展到20bit采样精度的范例-430 extended to the SD16 module 20bit sampling accuracy of the sample

该代码是在凌阳单片机上实现Tcp/IP协议的代码。通过它可以让单片机接入互联网。-the code is in Sunplus SCM achieve TCP/IP protocol code. Through its SCM can allow access to the Internet.

RS-485接口具有较强的抗干扰性，数据传输的距离较远，在一些应用中常常需要把RS-232标准的信号转换为RS-485的标准信号进传输。图中所示电路允许数据在RS-232/RS-485这两个不兼容的串行数据接口间传递。传输速度为480波特时，传输距离可达1750米。图中双RS-232收发器IC1将主机(PC)输出的RS-232电平转换为TTL电平，驱动高速RS-485收发器IC2 的输入，倒相器使IC2、IC3在受到起始位时被激活。-RS-485 trying to lay all the thoroughly bleed at the nose picking up the birthday 扰 fern cavity 强 ， Chu Huai basin cavity beat escapement for the birthday candle远Now ， Which instance, using Beckmannia中

８９Ｃ２０５１控制的智能密码锁,4*4键盘控制.-89C2051 control of the intelligent password lock, 4* 4 keyboard control.

从24c02中读出音乐来并播放音乐-From the 24C02 to read music and play music

单手PC键盘(at90s8515)-one-handed PC keyboard (at90s8515)

单片机C51串口中断接收和发送测试例程（含通信协议的实现）-C51 single-chip serial port receive and transmit interrupt routine test (including the realization of communication protocols)