单片机4*4键盘与LED数码管的显示，按下键盘显示相应的字符（1，2，3...A，B...E）...

这是一个C51做的GPS终端 CPU：89S52 语言： Keil C51 主要是RS232通信-This a C51 done GPS terminal CPU : 89S52 Language : Keil C51 is RS232 communication

Base64编码方法及例程，其功能和方法都在文件的开头部分说明。-Base64 encoding methods and routines, its functions and methods at the beginning of the document part.

采用AYG-59C GSM MODEM模块，和at89s52的串行口通信。通过at指令控制GSM模块，同时用单片机处理GSM发给单片机串口的反馈信息，实现远程无线控制。-Used AYG-59C GSM MODEM modules, and AT89S52 serial port communications. GSM through at command control module, at the same time deal with single-chip GSM distributed feedback single-chip serial port, wireless remote control.

LED的电路连接方法，多年经验。有很多种方法可供选择，很重要，希望大家能去持我。-circuit OF led.thank you .It s my own performation,hope you give me a great help.

driver 1602 with help of c

接触式IC卡的读写函数，IIC通信模式的源代码-Contactless IC card reader function, IIC communication model" s source code

Keil Cx51 V7_0单片机高级语言编程与_uVision2应用实践 徐爱均 彭秀华主编 电子工业出版社-a classic mcu programming book about keil

详细的介绍了msp430单片机的c语言编程，有很多例子。-Detailed introduction of the MSP430 MCU c language programming, there are many examples.

我自己整理的单片机4*4键盘最简扫描算法，相当精炼。-I sort of SCM 4* 4 keyboard the most simple scanning algorithm, very refined.

一个科室对讲系统单户对讲主机的源代码，CPU是P87LPC762，带有门禁刷卡功能-A single-family intercom intercom systems departments host the source code, CPU is the P87LPC762, with a credit card access control function