用8051汇编编程的定点，三字节浮点，四字节浮点的字程序库。...

lcd液晶屏显示的源程序,c语言编写.在KEIL环境下编译,直接下载到单片机即可-lcd LCD display source, c language. in KEIL compiler environment, can be directly downloaded to a single-chip microcomputer

C8051F02x单片机~~~的说明文档-C8051F02x MCU ~ ~ ~ The documentation ~~~~~

AT24C02的应用例程，进行eeprom和I2C的应用设计-AT24C02 Application routines for I2C EEPROM and Application Design

PWM 控制电机文档及源代码-PWM motor control documentation and source code

LCD320240，C51单片机的图文显示测试。-LCD320240, C51 MCU graphics display test.

MODBUS通信协议MODBUS源代码最初是MODICON为自己生产的PLC（可编程逻辑控制器）协议而开发的，后来广泛应用于工业部门，这是一对多的通信方式，他的方式是免费开放的，任何人都可以开发，这么多的PLC，人机界面和控制软件有支持方案。

AVR单片机入门及C语言高效设计实践（六） ATMEAG16L的定时／计数器 ATMEAG16L有两个8位定时／计数器（T／C0、T，C2）和一个16位定时／计数器T/C1）。每一个计数器都支持PWM（脉冲宽度调制）输出功能。PWM输出在电机控制、开关电源、信号发生等领域有着广泛的应用。[第一段]-AVR C language portal and efficient design practice (6) ATMEAG16L the timer/counter All ATMEAG16L two 8 timer/counter (T/C0, T, C2) and a 16 timer/counter T/C1). Each counter support for a PWM (pulse width modulation) output function. PWM output in motor control, switching power supply, signal and other fields has wide application. [Paragraph]

采用12位MAX 197对外部信号采样。采用全周波傅立叶积分算法，对采样信号进行处理，对电力系统的电压有效值、功率等特征量进行实时在线监测；采用全数字测量法测量相位差；并采用自适应技术调整采样间隔，消除非同步采样对计算造成的误差，利用PIC18F458捕获功能实时监测电力系统频率波动，修订采样间隔。分析了各量的测量误差，均达到标准。并提供友好的人机交互界面。-used 12 MAX 197 pairs external signal sampling. Using Fourier-Cycle Integration Algorithm for the sampling signal processing, power systems to the RMS voltage, power characteristics of the volume in real-time on-line monitoring; All digital measuring method phase difference; Adaptive technology and the sampling interval, the elimination of non-synchronous sampling of the calculation error using PIC18F458 capture real-time monitoring of power system frequency fluctuations amended sampling interval. The analysis of the measurement error are up to standard. And to provide a friendly man-machine interface.

这是我在我们公司做的C51加油单片机程序-in our company do C51 microcontroller refueling procedures

Nokia3310的proteus仿真模型model.zip