该程序为51单片机做的频率计,可计频率可达999 HZ.

一些LCD库 分享给大家了 哈哈~-LCD library share some of the U.S. ha ha ~

基于单片机的交流伺服电机运动控制系统研究与开发-Based on single-chip AC servo motor motion control system research and development

电子秒表的设计 1、用系统8253定时器提供的55ms定时单位，设计秒表定时程序。 2、有关系统定时方法： PC机系统中的8253定时器0工作于方式3，外部提供一个时钟作为CLK信号, 频率：f=1.1931816MHz。 定时器0输出方波的频率:fout=1.1931816/65536=18.2Hz。 输出方波的周期Tout=1/18.2=54.945ms。8253A每隔55ms引起一次中断-Electronic stopwatch design one, using the system timer 8253 provides 55ms timing units, design stopwatch timing procedures. 2, the system timing method: PC system timer 0 of 8253 working in the way of 3, to provide an external clock as the CLK signal, the frequency: f = 1.1931816MHz. Timer 0 output square wave frequency: fout = 1.1931816/65536 = 18.2Hz. Cycle square wave output Tout = 1/18.2 = 54.945ms. 8253A every 55ms caused a disruption

用at89s52访问PDIUSBD12(USB协议）-AT89S52 visit with PDIUSBD12 (USB Protocol)

LCD-7279的经过调试多次已经能够实现在指定的位置显示特定的数据。 程序lcd1.c实现基本的功能，即：键盘输入0、1、2、3、4、5、6、7、8、9、acdef 在液晶的指定位置显示实现满屏或半屏显示点阵和字符，调入一幅图画的代码进行显示；-LCD-7279 after the repeated testing has been able to achieve the specified location-specific data. Lcd1.c procedures to achieve the basic functions, namely : the keyboard input 0, ,36.2. 8,9. a b c d e f in the designated location LCD realize Manping or semi-Screen Display and characters, transferred to a picture of the code display;

uCOS-II在C51下的一个完整的小游戏源码-uCOS-II C51 in the integrity of a small game FOSS

此子程序将进行AD转换和AD处理，处理后的12位AD值中低八位存放在 adc_buffer_low中，高四位存放在adc_buffer_hi寄存器的低四位-This subroutine will convert to AD and AD treatment, treated in the low 12-bit AD value stored in the adc_buffer_low eight, the high four storage registers in the low 4 adc_buffer_hi

单片机C51实战应用集锦，是很好的单片机初学者学习和参考的资料。-C51 single-chip Collection of combat application, is a very good learning and reference for beginners Singlechip information.

介绍了多种C语言的常用算法，是c语言工作必备工具软件。-Introduce a variety of C language commonly used algorithm, is an indispensable tool for the work of c language software.

编程器人机界面,51单片机选择、擦除、下载编程、校验和读除。-programming for man-machine interface, 51 microcontroller choice, erasure, download programming, in addition to checking and reading.