很好的AT89C2051的中文说明书 费了很大劲才找到的

利用单片机设计一个显示温度的系统，主要采用的是静态显示的方式-The use of microcontroller design a show that the temperature of the system, mainly in a static display mode

51单片机学习串口通讯C代码学习经验丰富工程师编写-51 Single-chip serial communication C code Learning to learn experienced engineers to prepare

四相步进电驱程序，能够实现电驱的运转速度的控制。-4-phase stepper electric drive program, to achieve the operation of electric drive speed control.

一个用AVR 单片机开发的工程实例，应该对同行有很大帮助-A single-chip with AVR development project examples, it should be of great help to peer

用proteus仿真实现投币赌博机，编译软件：keil C -Simulation with proteus gambling slot machine, build the software: keil C

C51编写的用ＩＯ脚模拟串口的源程序,供初学者参考-C51 prepared by serial IO pin analog source, the reference for beginners

完整的LM240128的显示程序,可以通过修改程序中的变量来改变显示内容,P89C668环境,其他51内核单片机均可移植,也可以加入控制程序在不同的情况下显示不同的内容.经过调试可用.-LM240128 integrity of the display program, may amend the procedures to change the variable content, P89C668 environment, MCU 51 other kernel can be transplanted, can also include control procedures in different circumstances show different content. After debugging available.

功能： 1、作为主机通讯采集两路下位机数据并将此数据通过8255送出（十路水位值） 并计算水头送STC板 2、采集数据为BCD码制，先转换成二进制，处理后再转换成BCD 3、通讯采用方式3，多机通讯，上位机发地址时TB8=1，其他TB8=0 下位机SM2=1，RB8=1时产生中断后使SM2=0收发数据，结束后SM2=1 在此系统中本机硬件地址要设为0-Features: 1, as the host of two-way communication acquisition of data-bit machine and send this data through 8255 (the road level 10 value) and calculate the head sent to STC board 2, for BCD code data collection system, the first converted into binary, and then deal with the conversion into BCD 3, communication using methods 3, multi-machine communications, address PC made TB8 = 1, other TB8 = 0 under the digital machine SM2 = 1, RB8 = 1 when the failure to make SM2 = 0 to send and receive data, after the end of SM2 = 1 in this system to the local hardware address set to 0

LPC2148 SD读写源代码,这个程序实现了对 SD卡的读写操作，有简单的说明，很容易看懂-LPC2148 SD to read and write source code, this process realize the SD card to read and write operations, has a simple explanation, it is easy to understand