?? 常用的幾種碼制轉(zhuǎn)換(ywgcat).htm
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<P align=center>文章編號:441----加入日期:2003-7-31 </P></TD></TR>
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<P align=center><B>常用的幾種碼制轉(zhuǎn)換(ywgcat)</B></P></TD></TR>
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<BLOCKQUOTE><BR>常用的幾種碼制轉(zhuǎn)換<BR><A
href="http://www.eebyte.com 2003-4-23 /"
target=_blank>http://www.eebyte.com 2003-4-23 /</A>電子工程師網(wǎng)站
<BR>#include <reg51.h><BR>#include <intrins.h><BR>#include
<stdio.h><BR>#include <ctype.h> <BR><BR>/**此宏定義摘自51bbs
Youth發(fā)表***/<BR>#define LongToBin(n) \<BR>(\<BR>((n >> 21) &
0x80) | \<BR>((n >> 18) & 0x40) | \<BR>((n >> 15) &
0x20) | \<BR>((n >> 12) & 0x10) | \<BR>((n >> 9) &
0x08) | \<BR>((n >> 6) & 0x04) | \<BR>((n >> 3) &
0x02) | \<BR>((n ) & 0x01) \<BR>)<BR><BR>#define Bin(n)
LongToBin(0x##n##l)<BR><BR>/**********
HEX轉(zhuǎn)BCD******/<BR>/***bcd_data(<0x255,>0)***/<BR>unsigned char
BCD2HEX(unsigned int bcd_data)<BR>{<BR>unsigned char
temp;<BR>temp=((bcd_data>>8)*100)|((bcd_data>>4)*10)|(bcd_data&0x0f);<BR>return
temp;<BR>}<BR>/**********
HEX轉(zhuǎn)BCD******/<BR>/***hex_data(<0xff,>0)****/<BR>unsigned int
HEX2BCD(unsigned char hex_data)<BR>{<BR>unsigned int
bcd_data;<BR>unsigned char
temp;<BR>temp=hex_data%100;<BR>bcd_data=((unsigned
int)hex_data)/100<<8;<BR>bcd_data=bcd_data|temp/10<<4;<BR>bcd_data=bcd_data|temp%10;<BR>return
bcd_data;<BR>}<BR><BR>void main(void)<BR>{<BR>unsigned int c;<BR><BR>c=
Bin(10101001); // then c = 0xA9<BR>c=BCD2HEX(0x255); //255
轉(zhuǎn)成HEX為0xff<BR>c=HEX2BCD(0xff); //0xff 轉(zhuǎn)成BCD碼為 255<BR>}<BR>-----afei
<BR><BR><BR><BR><BR>(文章推薦人：老萬) <BR><BR></BLOCKQUOTE></TD></TR>
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