she pin tou cai ma id xing

模拟串口工具。在C51下运行，可以方便初学者清楚了解串口的原理和扩展串口。-simulation tools. The C51 running, beginners can facilitate a clear understanding of the principles and serial port serial expansion.

scan file in microstation, simple example

报警测试程序，用于测试设备中的报警信息，进行和用户之间的显示和对话操作。-Alarm testing procedures, test equipment for the alarm information, and user display and dialogue between the operator.

用vb写的能够查看所有系统进程和进程所加载的模块-Using vb to write the be able to view all system processes and process modules loaded

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

单片机仿真软件proteus做的蜂鸣器例子，有助于在具备硬件情况下学习单片机-microcontroller simulation software lic do buzzer example, with the help of learning hardware MCU

LT_1B msp430开发板例子程序－SoftwareF-LT_1B msp430开发板例子程序－SoftwareFLL

AD中断服务程序,介绍了中断的利用和编程技巧-AD interrupted service procedures, introduced a suspension of the use and programming skills

利用PWM原理控制电磁阀的实例，对于这方面研究的人很有价值-Use of PWM control of solenoid valve principle examples of research in this area were of great value

yong 89s52 zhizuo de lanqiu jifenpai,yong KEIL he PROTUES da kai.-A basketball score counter sysrem ,use 89s52 as mcu.