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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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控制APIC的汇编源程序
控制APIC的汇编源程序-control APIC compilation source
- 2022-07-14 00:33:54下载
- 积分：1
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多位的加减运算，允许有负数.
多位的加减运算，允许有负数.-number of addition and subtraction operations and allow a negative.
- 2023-09-08 03:40:02下载
- 积分：1
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机器人遍历障碍地图
机器人遍历障碍地图-robot traverse obstacles map
- 2022-06-15 18:42:33下载
- 积分：1
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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...
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信号便是符号“1”对应于载频，而符号“0”对应于载频（与不同的另一载频）的已调波形，而且与之间的改变是瞬间完成的。 -Digital frequency modulation called frequency shift keying (FSK), binary frequency shift keying recorded as 2FSK. Digital frequency-shift keying is the carrier frequency to transmit digital information, that is, the number of messages transmitted with the control of the carrier frequency. 2FSK signal is the symbol of "1" corresponds to the carrier frequency, while the symbol "0" corresponds to the carrier frequency (with a different carrier frequency to another) and modulated waveform, but also between the change was instantaneous.
- 2022-08-23 09:17:39下载
- 积分：1
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捕捉视频VB编写, 捕捉视频VB编写,捕捉视频VB编写
捕捉视频VB编写, 捕捉视频VB编写,捕捉视频VB编写-VB prepared to capture video, capture video prepared VB, VB prepared to capture video
- 2023-05-08 17:05:03下载
- 积分：1
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PIC程序
PIC程序-PIC procedure
- 2022-01-23 10:35:46下载
- 积分：1
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这是用汇编语言编写的关于十进制表达式的程序！输入完表达式之后，按＂＝＂键结束输入！在我们检查的时候，老师说这个程序考虑的很周到，希望会对大家有用！...
这是用汇编语言编写的关于十进制表达式的程序！输入完表达式之后，按＂＝＂键结束输入！在我们检查的时候，老师说这个程序考虑的很周到，希望会对大家有用！-This is written in assembly language on the procedure decimal expression! End the importation of expression, according to the "=" key input end! We check the time, the teacher said this procedure is very thoughtful consideration, we would hope that useful!
- 2022-05-27 08:32:56下载
- 积分：1
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汇编写的通讯录代码
汇编写的通讯录代码-compiled code written correspondence
- 2022-01-21 18:22:02下载
- 积分：1
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义隆153S七彩LED跳变
资源描述LED七彩跳变，延时为500MS,P6.2为红色 P6.1为绿色 P6.0为蓝色
- 2023-07-08 19:05:03下载
- 积分：1
