确定结构的DFA句子识别程序的基础上，识别…

一、 使用键盘显示接口芯片8279接收按键键值，并在七段数码管上显示出来，通过判断键值进入相应音乐播放处理程序。在音乐播放程序中，使用定时器/计数器8253的计数器2，使其工作在方式¬ ¬ 3―方波发生器，通过查表依次取出乐曲频率值送入计数器作为计数初值，经out2输出方波，驱动扬声器发出不同频率的声音，在每个音阶之间加入相应的延迟时间，即实现了音乐的播放。-First, the use of a keyboard display interface chip receive keys keys 8279, and Seven-Segment LED display, through to determine the corresponding music player keys to enter the treatment program. Procedures in the music player, use the timer/counter 2 counter 8253 to work in the way ? ? 3- square-wave generator, followed by out music through the look-up table values into the counter as a frequency count of the initial value, the output side out2 waves, driven loudspeakers of different frequency sound, in between each scale by adding the appropriate delay time, namely, the realization of the music player.

温度传感器的C51源程序，可使用keil直接编译执行。-temperature sensor C51 source can be used directly keil compiler implementation.

用VB做的一个简单通讯录-VB do a simple directory

可以还源星号密码，是汇编朋友学习的好教材-You can also source an asterisk password, the compilation is good material for a friend to learn

接口技术，汇编的2个简单的例子-interface technology, the compilation of two simple examples

dos memory management sample

一个16F877实现计时秒表功能-16F877 achieve a stopwatch function of time

拖动鼠标画线，圆，矩形的例子-Drag painting line, circle, rectangle example

自己看下吧-Facie own it

我们接口技术做的实验8255，有需要的就下载吧-we do Interface Technology Experiment 8255, on the need to download it