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First, the use of a keyboard display interface chip receive keys keys 8279, and...
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.
- 2023-03-17 05:55:03下载
- 积分:1
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通过拖动活动条来显示颜色
虽然有很简单,但是还是有值得学习的地方...
通过拖动活动条来显示颜色
虽然有很简单,但是还是有值得学习的地方-Article by dragging activities to show the color
- 2022-01-26 00:28:55下载
- 积分:1
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1602
1602-LCD使用手册.内含有编程实例和1602的子程序.-1602-LCD user manual. Contains programming examples and the subroutine 1602.
- 2023-05-14 15:40:03下载
- 积分:1
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German 6 Track Irregularity simulation program, hoping for all of us!
模拟德国六级轨道不平顺的程序,希望对大家有用!-German 6 Track Irregularity simulation program, hoping for all of us!
- 2023-08-21 19:00:04下载
- 积分:1
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ADC0809 转 换 器 的 引 脚 介 绍
ADC0809 转 换 器 的 引 脚 介 绍-ADC0809 pin converter introduced
- 2023-06-18 01:15:03下载
- 积分:1
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it can help you use C++ program we
it can help you use C++ program we
- 2022-05-12 18:46:21下载
- 积分:1
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一种很好的用单片机控制步进电机的程序,用汇编语言编写。...
一种很好的用单片机控制步进电机的程序,用汇编语言编写。-A good use of single-chip stepper motor control procedures, with the compilation of languages.
- 2022-04-22 11:35:50下载
- 积分:1
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汇编语言实验作业,调试正确的语法分析.帮助有需要的朋友少走弯路...
汇编语言实验作业,调试正确的语法分析.帮助有需要的朋友少走弯路-assembly language experiment operations, debugging correct grammar analysis. Help the needy friends detours!
- 2022-06-28 13:24:09下载
- 积分:1
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fun typing games
好玩有趣的打字游戏-fun typing games
- 2022-01-25 15:21:02下载
- 积分:1
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河内塔游戏
应用背景代码C B N #ả演示THAP河内关键技术我ãTHAP河内NổAkt, ; ;Bà我ánáp HàNộ我, ; ;代码C B N #ả演示THAP河内, ; ;我ãThuậTáN Akt首席人事官Bà我áp HàNộ我
- 2023-05-30 17:50:03下载
- 积分:1