8279 initialization procedure, keyboard and display processing subroutine

基于AVR的USB单片机的源代码,其中部分代码被用在产品上.-based on the USB AVR microcontroller source code, part of which code was used in products.

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

针对于AT24CXX的IIC读、写操作的源码。-For the IIC in AT24CXX read and write operations source.

c51学习使用的资料 有100多个原程序-decoder learning to use the data more than 100 original program

51单片机+FI1256高频头=电视接收机源代码-51 SCM+ FI1256 tuner = television receiver source code

MCS51单片机实用子程序-MCS51 practical Subroutine

ZLG7289键盘显示接口芯片是一个很常用的接口芯片，至需4个IO口接可以控制显示8位的数码管显示和64个矩阵键盘的自动扫描，效果很好。-ZLG7289 keyboard display interface chip is a very common interface chip, to take four IO access can be controlled mouth shows 8 digital tube display and keyboard matrix 64 automatically scans, very good.

工 程 名:DG128串行查询(SCIpooling) 硬件连接:MCU的串行口与PC机的串行口相连 。 程序描述:利用查询方式把收到的数据发送回去。波特率为9600,使用SCI0口-Project name: DG128 serial query (SCIpooling) hardware connection: MCU

pic 单片机的应用子程序库，用过感觉不错-pic microcontroller applications subroutine library, used good feeling

usb程序 硬件用的是isp1518，传输方式dma-usb hardware procedure is used isp1518, transmission dma