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4 的代码
4-4.txt
///键盘扫描程序////
keyscan()
{
uchar h,n,m;
P1=0xf0;
if((P1&0Xf0)!=0Xf0)
{ Delay1ms(2);
if((P1&0Xf0)!=0Xf0)
{
h=P1;
h=h&0xf0;
}
}
P1=0x0f;
if((P1&0x0f)!=0x0f)
4-4.htm
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4-4.htm
vti_encoding:SR|utf8-nl
vti_timelastmodified:TR|23 Aug 2000 18:14:42 -0000
vti_extenderversion:SR|4.0.2.3406
vti_filesize:IR|8986
vti_title:SR|4
vti_metatags:VR|HTTP-EQUIV=Content-Type text/html;\\ ch
4-4.gif
vti_encoding:SR|utf8-nl
vti_timelastmodified:TR|23 Aug 2000 14:40:00 -0000
vti_extenderversion:SR|4.0.2.3406
vti_lastwidth:IX|390
vti_lastheight:IX|308
vti_filesize:IR|3006
vti_cacheddtm:TX|23 A