美国ISD公司的ISD4000系列的ISD4002录放程序

串口扩展芯片，可以扩展单片机的串口，使单片机的串口由一个变为3个甚至更多，降低成本。

指纹通讯模块程序，该模块以ATMEL公司的89s52为单片机与指纹模块进行数据通讯，以面向门禁或考勤等应用-Fingerprint procedures for communication module, the module to ATMEL Corporation 89s52 for single-chip modules and fingerprint data communication-oriented applications such as access control or attendance

公司打印机转接板的一段小代码 主要功能是从ARM上通过I2C读取数据，然后用并口控制打印机打印，使用单片机控制-companies printer adapter plate section of the main functions of the small code is adopted from ARM I2C read data, and then use the parallel port printer control, the use of SCM control

提出了一个由AT89C52单片机控制步进电机的实例。可以通过键盘输入相关数据, 并 根据需要, 实时对步进电机工作方式进行设置, 具有实时性和交互性的特点。该系统可应用于 步进电机控制的大多数场合。实践表明, 系统性能优于传统的步进电机控制器。-Put forward a AT89C52 single-chip stepper motor control example. Through the keyboard input data, and in accordance with the needs of real-time work on the stepper motor set up, with real-time and interactive features. The system can be applied to stepper motor control of the majority of occasions. Practice shows that system performance is superior to traditional stepper motor controller.

红外线的解码驱动程序，用于单片机对遥控器等发出的红外线进行解码接收-Infrared decoder driver for single-chip, etc. on the remote control infrared receiver to decode

一款实现des加密的键盘，符合银行加密标准的键盘-A realization of des encryption keyboard, keyboard encryption standard in line with Bank

AT45DB021B的C51驱动程序-AT45DB021B driver of the C51

51读写U盘全套技术资料,原理图,KEIL C51原代码-U disk 51 to read and write a full set of technical information, schematics, KEIL C51 original code

一个接收GPS模块接收时间显示在LCD上面 用SW调格林威治+-小时分 -A GPS receiver module to receive the time displayed on the LCD above tune with SW Greenwich+- Hours minutes

2401_Quick_Dev无线模块的源代码_source code for AVR 8515-2401_Quick_Dev wireless module