The operation of timer operation is completed through the timer system precision...

51MCU在KEILUV3下开发的源代码，包括全部工程文件-51MCU in KEILUV3 developed source code, including all engineering documents

51单片机对IC卡读写程序，使用的卡的型号为SLE4442,有帮助就下。-51 microcontroller IC Card Reader right, the use of the card for the Model SLE4442, help on the next.

超声波测距 利用 送接受的时间 差计算得到距离-Ultrasonic Ranging acceptable use to send the time difference calculated by the distance

周立功公司开发的单片机手册，具体的数据手册见周立功网站下载。-Week Ligong Singlechip developed manual, the specific data manual see Zhou Ligong website.

实现舵机开机时自动转为0，通过单片机上的按键调节舵机的角度，并且在数码管上显示相应的角度，注解详细。-To achieve steering boot automatically be converted to 0, through the microcontroller on the buttons adjust the angle of the steering gear, and digital tube displays the corresponding point of view, comment in detail.

会议计时器，以MCS51单片机为核心，实现会议演讲定时提醒功能，可以进行设定时间，倒计时，暂停，蜂鸣器提醒或灯光提醒等功能-Session timer to MCS51 single-chip microcomputer as the core, the realization of the meeting from time to time to remind the function of speech, you can set time, the countdown, suspension, or a buzzer to remind lighting functions to remind

本文件代码的开发环境是keil C，芯片是AT89S52，这是一个如何使用DS18B20温度传感器的例子，从中可以学习如何利用I2C以DS18B20通信。-This document is a code development environment keil C, chip AT89S52, this is a how to use the example of DS18B20 temperature sensor, which can learn how to use I2C to DS18B20 communications.

DS1302读写一体化C51源程序-DS1302 source code reader integration C51

AD7705的驱动程序，采用C51开发。-AD7705 driver development using C51.

飞思卡尔智能小车 AD驱动程序示例代码 芯片为MC9S12XS128-AD Freescale" s Smart car driver sample code chip MC9S12XS128