数字频率调制又称频移键控（FSK），二进制频移键控记作2FSK。数字频移键控是用载波的频率来传送数字消息，即用所传送的数字消息控制载波的频率。2FSK信号便是符...

一个压缩壳的源代码， -sssssssssssssssssaaaaa

12232液晶的测试驱动程序，在12232通过at89s51显示12232的液晶测试程序。用汇编写成测试可以使用-12232 LCD test driver, in the 12232 through 12232 of the liquid crystal display AT89S51 test procedure. With the compilation of written test can be used

直流电机的模拟,显示并可自由设定电机的转速 接口设计源代码-DC motor simulation, shows can be free to set the motor speed interface design source code

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.

filePath="c:/test/tt.txt" #从文件中读取信息 f=open(filePath, "r")#运用读的方式打开文件， for line in f: #每次读取文件的一行内容      print(line) f.close() #向文件中写入信息 f=open(filePath, "a") #这里有两种方式：第一种是以w的形式，它写入时将会清空以前的数据然后再写入数据，第二种是以a的形式，它以追加的形式写入数据 f.write("我开始向文件中写入信息 ") f.writelines("我已经向文件写入了信息") f.close()

4种不同模型的程序 对雷达杂波方针很有用的-is important to radar clutter moleling

用汇编语言写的18B20写的温度测量和显示程序,采用LCD显示.-Written in assembly language using 18B20 written procedures for temperature measurement and display using LCD display.

今天我有时清，快给我，，尼尼 尼基尼尼 尼尼 -today, I sometimes clear, fast to me, Ninininini Jinini Ninini Ni

包含7920液晶显示芯片驱动，用户可参考设计使用-Contains 7920 chip LCD driver, the user can use the reference design

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