This document contains a variety of source

八个实用的汇编程序，可直接应用于51单片机，高效方便-Eight assembler practical, can be directly applied to 51 single-chip, to facilitate efficient

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

摩托罗拉手机A890广告演示，一个简单的演示动画，适合新手初学者入门学习。-Motorola A890 mobile phone ads demonstration, a simple demonstration of animation, suitable for novice beginners learning portal.

LCD12864直接写屏驱动程序，12864LCD直接写屏，省去显示缓冲区，-LCD12864 written directly screen drivers, 12864LCD written directly screen, eliminating display buffer,

lcd液晶屏显示的源程序,c语言编写.在KEIL环境下编译,直接下载到单片机即可-lcd LCD display source, c language. in KEIL compiler environment, can be directly downloaded to a single-chip microcomputer

串行驱动led显示- Serial actuates led to demonstrate

一款关于ISD4004语音芯片的开发实例，采用C语言编写，具有完整的 SPI 总线操作函数，一定会为你做ISD4000系列芯片的开发带来很大帮助-ISD4004 voice chip on a development instance, using C language, with a complete function of SPI bus operations, will definitely help you make ISD4000 series chips have a great help

超声波测距,包括有pcb原理图，用c写的程序，还有详细的说明-Ultrasonic ranging, including schematics pcb with c written procedures, detailed instructions have

该代码为温湿度传感器采集程序,包括测量温度、湿度等功能。-The code for the temperature and humidity sensor acquisition procedures, including measurement of temperature, humidity and other functions.