如何在5V系统中使用C8051FXXX，通过实例具体介绍了其应用。

单片机AT90S系列 制作简易USB接口（软件模拟,无usb硬件）。- Monolithic integrated circuit AT90S series manufacture simple USB connection (software simulation, non- usb hardware).

Keil C51中文使用手册-Keil C51 Chinese Manuals

用周立功的easyarm615做的智能循迹小车-With weeks of easyarm615 Ligong make intelligent tracking car

我们设计的火灾报警器，基本上满足要求，大家可以参考-We design fire alarm, and basically meet the requirements of everyone can refer to

The sample software includes, common library, peripheral APIs, and test modules for the APIs. The common library include startup file, standard definition and header files, processor specific setup module, generic interrupt related APIs, timer routine, and scatter loading file. The peripheral directories include, GPIO, PWM, Real-time clock, timer, SPI, I2C, Watchdog timer, UART, external interrupt, etc.

51系列单片机开发：实验课程 显示程序（液晶显示）-51 Series MCU Development: Experiments show the curriculum process (liquid crystal display)

本系统采用MSC-51系列单片机ATSC51和可编程并行I/O接口芯片8255A为中心器件来设计交通灯控制器，实现了能根据实际车流量通过8051芯片的P1口设置红、绿灯燃亮时间的功能；红绿灯循环点亮，倒计时剩5秒时黄灯闪烁警示（交通灯信号通过PA口输出，显示时间直接通过8255的PC口输出至双位数码管）；车辆闯红灯报警；绿灯时间可检测车流量并可通过双位数码管显示。本系统实用性强、操作简单、扩展功能强。 -The system uses MSC-51 series single-chip ATSC51 and programmable parallel I/O interface chip 8255A-centric device designed to control traffic lights, can be achieved in accordance with the actual traffic flow through the P1 port 8051 chip set red, green fuel Liang function of time traffic light cycle, the countdown five seconds left when the yellow light flashing warning (traffic lights through the PA output signal indicates the time directly through the PC port output 8255 to double-digits) vehicle alarm闯红灯 green time traffic flow can be detected through a double-digital display. The system practical, simple and strong extensions.

单片机下的ADC0809驱动程序-the ADC0809 SCM Driver

51单片机浮点子程序库(中),直接嵌入,方便使用.-51 single-chip floating-point subroutine library (middle), directly embedded, user-friendly.

时间+温度用液晶12864显示，欢迎大家共享-Time+ temperature display with LCD 12864, please share! ! ! !