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求一个8按键的简易电子琴c51的程序与原理图!!!! 谢谢谢谢!!!
马上要交实验作品了所以,所以希望各位能帮帮忙。
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2017-5-3 20:42:17
#include
#define uchar unsigned char
#define uint unsigned int
***it BEEP = P3^7;
***it K1 = P1^4;
***it K2 = P1^5;
***it K3 = P1^6;
***it K4 = P1^7;
void DelayMS(uint x)
{
uchar t;
while(x--)
{
for(t=0;t<120;t++);
}
}
void Play(uchar t)
{
uchar i;
for(i=0;i<100;i++)
{
BEEP = ~BEEP;
DelayMS(t);
}
BEEP = 0;
}
void main()
{
P1 = 0xff;
while(1)
{
if(K1==0) Play(1);
if(K2==0) Play(2);
if(K3==0) Play(3);
if(K4==0) Play(4);
}
}
自己加几个开关加油
#include
#define uchar unsigned char
#define uint unsigned int
***it BEEP = P3^7;
***it K1 = P1^4;
***it K2 = P1^5;
***it K3 = P1^6;
***it K4 = P1^7;
void DelayMS(uint x)
{
uchar t;
while(x--)
{
for(t=0;t<120;t++);
}
}
void Play(uchar t)
{
uchar i;
for(i=0;i<100;i++)
{
BEEP = ~BEEP;
DelayMS(t);
}
BEEP = 0;
}
void main()
{
P1 = 0xff;
while(1)
{
if(K1==0) Play(1);
if(K2==0) Play(2);
if(K3==0) Play(3);
if(K4==0) Play(4);
}
}
自己加几个开关加油
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