单片机扩展是单片机应用的重要部分，文档主要介绍单片机的片外扩展。...

ds1302应用实例 烧进单片机即可应用 不看后悔-ds1302 Applications can be burned into the microcontroller application Bukanhouhui

51单片机，利用扬声器产生救护车声音的效果。-51 Single-chip, using loudspeakers produce sound effects of the ambulance.

用C51实现MCS51系列单片机外接ROM扩充--Using C51, it implements external ROM expansion for MCS51 series SCM.

adc ， ad7705 模拟spi总线的keil c51 程序，经过调试通过。-adc, ad7705 analog spi bus keil c51 procedures, after debugging through.

单片机C8051加无线模块nRF24L01实现温度传感器数据采集和无线收发（接收部分）-C8051 MCU plus wireless module nRF24L01 to achieve the temperature sensor data acquisition and wireless transceiver (receiver part)

提取、刷写飞利浦713X系列电视卡EEPROM（识别码）-Extraction, Writing Brush Philips 713X series tv card EEPROM (ID)

基于uPSD3334单片机pwm波形产生程序，频率可调，占空比可调。可同时产生三路PWM波形。在电力电子中有极好的应用。使用Kerl开发环境-based uPSD3334 MCU pwm waveform generator procedures, adjustable frequency, duty cycle adjustable. May also have three PWM waveform. In power electronics has an excellent application. Kerl use development environment

非常方便使用的ds1302程序。使用时，只需调用5个函数，即可完成1302的初始化，读写等-Ds1302 is very easy to use program. Use, simply call the 5 function, 1302 to complete the initialization, reading and writing, etc.

zlg7289键盘程序，ZLG7289仅用于键盘的程序，非常好用，尽在.h文件中更改定义端口就行。-zlg7289 keyboard procedures, ZLG7289 procedures only for the keyboard, very easy to do in. h file to change the definition of ports on the line.

这个程序是用TI的单片机MSP430实现的PWM波形的输出。-This procedure is the realization of TI s MSP430 microcontroller PWM output waveform.