C51编制的51单片机DA程序，适用于初学者参考。

这个程序利用89S51输出信号来驱动一个步进马达*/

支持键盘双击的C51程序，用于单片机辨别键盘双击-support the C51 procedures for identifying keyboard click MCU

基于easyarm2200的USB HID类的多媒体键盘-Easyarm2200 based on the USB HID class multimedia keyboard

温度传感器用单总线DS18B20，CPU为2051，三个按键，分别为UP，DOWN，SET温度调节上限为125度，下限为-55度。-Single-bus temperature sensor DS18B20, CPU for 2051, three buttons, namely, UP, DOWN, SET temperature regulation maximum of 125 degrees,-55 degrees for the lower limit.

单片机P1口与4个按键连接，用于信号幅度和频率调节操作键。单片机P0、P2.7、P3.6(-WR)与DA0832、2个741(运放)连接构成波形信号输出电路。 编程使波形信号输出电路输出正弦波信号，并且可通过操作键调节信号的幅度和频率。幅度和频率调节级别从0~10，共11个等级。 -Singlechip P1 I connect with the four buttons for the signal amplitude and frequency adjustment operation keys. Singlechip P0, P2.7, P3.6 (-WR) and DA0832, 2 months 741 (operational amplifier) to connect constitute waveform signal output circuit. Programming so that waveform signal output circuit output sine wave signal, and can be operated keys adjust the signal amplitude and frequency. Amplitude and frequency adjustment level from 0 ~ 10, a total of 11 grades.

在STC5410AD单片机硬件基础上实现的串行接口的液晶显示源程序。-The STC5410AD MCU based on the hardware, a serial interface, LCD display source.

128*64点 LCD及DS1302 应用-128* 64 points, LCD and DS1302 Application

PROTEL 99SE快速入门指南，是初学者的良师益友。-PROTEL 99SE Quick Start Guide is a mentor for beginners.

C51实现的FAT32文件系统-C51 of the FAT32 file system

51单片机的按键程序，汇编编写，适合初学者-51 Single-chip key procedures, the compilation of the preparation, suitable for beginners