用C51实现MCS51系列单片机外接ROM扩充

简单的A/D，D/A转换程序，适合初学者

MAX1247子程序,实现12位高精度串行AD转换-MAX1247 subroutine, 12 realize high-precision serial AD converter

硬件协议栈芯片w3100a的DHCP实现，51单片机，keil51开发环境-hardware stack of chips w3100a DHCP realized, 51 microcontroller, development environment keil51

本代码以8051单片机做的，实现对电子钟的功能。功能包括四按键对电子钟的时间及年月日的调整，6LED数码管显示时间。各部分功能以模块写出，便于以后调用，对于初学单片机的朋友们会有很大帮助。-The code to 8051 to do, to achieve the electronic clock function. Features include 4 buttons on the electronic form of time and date adjustment, 6LED digital tube display time. All parts of capabilities to the module to write, easy to call the future, for beginners SCM would be of great help to my friends.

通过硬件电路实现，智能湿度仪。测量空气湿度。先通过数字端，在经过模拟电路处理，完成相应功能。-hardware circuit, intelligent humidity instrument. Measurement of air humidity. First-through digital, analog circuit after processing to complete functional.

实时时钟M41T0源程序,你只要定议好引脚,便能使用,主程序是一个应用试验-M41T0 real-time clock source, as long as you set a good discussion pin can use, the main program is a pilot application

Atmega128L的说明，对使用该单片机开发的人员会有很打帮助-Atmega128L note on the use of the single-chip development to help staff there will be a hit

一个不错的ROM仿真器制作,有全套的制作资料,包括Protel电路图和驱动程序-a good ROM Emulator production, with a full set of production data, including Protel circuit and drivers

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

ID卡读写 （51的汇编程序）-ID Card Reader (51 compilation procedure)