呕心沥血花了将近一个月编写的打印机程序，可用在89C51系列

单片机电路图.开发者可借助此51电路原理图，大大简化开发难度，提高效率。-Single-chip circuitry. Developers can take advantage of the 51 circuit schematic diagram, greatly simplified the development of the difficulty and improve efficiency.

C51单片机教程L1,以及L1的例子源代码.-C51 Singlechip Guide L1, and L1 example source code.

单片机C51实战应用集锦，是很好的单片机初学者学习和参考的资料。-C51 single-chip Collection of combat application, is a very good learning and reference for beginners Singlechip information.

温度控制器：AT89C2051做数据处理和显示；18B20做测温-temperature controller : AT89C2051 do data processing and display; 18B20 do Temperature

modbus slave programs MODBUS RTU从站 源程序-modbus slave programsMODBUS RTU slave source

单片机与PC键盘的程序-MCU and the procedures PC keyboard

isd1420语音芯片源程序用KEI UVISION打开-isd1420 voice chip source with open KEI UVISION

TC35GSM模块操作C51子程序，项目用的，少加修改就可以应用于开发和学习！-C51 subprogram module TC35GSM operation, the project used, less can be used without modification on the development and learning!

rc500 c语言库函数，对RC500的开发提供了捷径-rc500 c language library functions, the development of RC500 provides a shortcut

本程序通过对研祥EVOC_PCL813高速A/D数据采集卡的驱动，采集40路模拟通道的数据，并以数据文件的形式存储在硬盘上，生成文本文件-through the right procedures EVOC EVOC_PCL813 high-speed A/D data acquisition card drive, collecting 40 analog channel data and data in the form of documents stored on the hard drive, generating text files