\n\t\u5f53\u5355\u7247\u673a\u8fdb\u5165\u7a7a\u95f2\u6a21\u5f0f\u65f6\uff0c\u9664CPU<\/u>\u5904\u4e8e\u4f11\u7720\u72b6\u6001\u5916\uff0c\u5176\u4f59\u786c\u4ef6\u5168\u90e8\u5904\u4e8e\u6d3b\u52a8\u72b6\u6001\uff0c\u82af\u7247\u4e2d\u7a0b\u5e8f\u672a\u6d89\u53ca\u5230\u7684\u6570\u636e\u5b58\u50a8\u5668\u548c\u7279\u6b8a\u529f\u80fd\u5bc4\u5b58\u5668\u4e2d\u7684\u6570\u636e\u5728\u7a7a\u95f2\u6a21\u5f0f\u671f\u95f4\u90fd\u5c06\u4fdd\u6301\u539f\u503c\u3002\u4f46\u5047\u82e5\u5b9a\u65f6\u5668<\/u>\u6b63\u5728\u8fd0\u884c\uff0c\u90a3\u4e48\u8ba1\u6570\u5668\u5bc4\u5b58\u5668\u4e2d\u7684\u503c\u8fd8\u5c06\u4f1a\u589e\u52a0\u3002\u5355\u7247\u673a\u5728\u7a7a\u95f2\u6a21\u5f0f\u4e0b\u53ef\u7531\u4efb\u4e00\u4e2a\u4e2d\u65ad\u6216\u786c\u4ef6\u590d\u4f4d\u5524\u9192\uff0c\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u4f7f\u7528\u4e2d\u65ad\u5524\u9192\u5355\u7247\u673a\u65f6\uff0c\u7a0b\u5e8f\u4ece\u539f\u6765\u505c\u6b62\u5904\u7ee7\u7eed\u8fd0\u884c\uff0c\u5f53\u4f7f\u7528\u786c\u4ef6\u590d\u4f4d\u5524\u9192\u5355\u7247\u673a\u65f6\uff0c\u7a0b\u5e8f\u5c06\u4ece\u5934\u5f00\u59cb\u6267\u884c\u3002<\/p>\n
\n\t\u8ba9\u5355\u7247\u673a\u8fdb\u5165\u7a7a\u95f2\u6a21\u5f0f\u7684\u76ee\u7684\u901a\u5e38\u662f\u4e3a\u4e86\u964d\u4f4e\u7cfb\u7edf\u7684\u529f\u8017\uff0c\u4e3e\u4e2a\u5f88\u7b80\u5355\u7684\u4f8b\u5b50\uff0c\u5927\u5bb6\u90fd\u7528\u8fc7\u6570\u5b57\u4e07\u7528\u8868<\/u>\uff0c\u5728\u6b63\u5e38\u4f7f\u7528\u7684\u65f6\u5019\u8868\u5185\u90e8\u7684\u5355\u7247\u673a\u5904\u4e8e\u6b63\u5e38\u5de5\u4f5c\u6a21\u5f0f\uff0c\u5f53\u4e0d\u7528\u65f6\uff0c\u53c8\u5fd8\u8bb0\u4e86\u5173\u6389\u4e07\u7528\u8868\u7684\u7535\u6e90\uff0c\u5927\u591a\u6570\u8868\u5728\u7b49\u5f85\u6570\u5206\u949f\u540e\uff0c\u82e5\u6ca1\u6709\u4eba\u4e3a\u64cd\u4f5c\uff0c\u5b83\u4fbf\u4f1a\u81ea\u52a8\u5c06\u6db2\u6676\u663e\u793a<\/u>\u5173\u95ed\uff0c\u4ee5\u964d\u4f4e\u7cfb\u7edf\u529f\u8017\uff0c\u901a\u5e38\u7c7b\u4f3c\u8fd9\u79cd\u529f\u80fd\u7684\u5b9e\u73b0\u5c31\u662f\u4f7f\u7528\u4e86\u5355\u7247\u673a\u7684\u7a7a\u95f2\u6a21\u5f0f\u6216\u662f\u6389\u7535\u6a21\u5f0f\u3002\u4ee5STC89\u7cfb\u5217\u5355\u7247\u673a\u4e3a\u4f8b\uff0c\u5f53\u5355\u7247\u673a\u6b63\u5e38\u5de5\u4f5c\u65f6\u7684\u529f\u8017\u901a\u5e38\u4e3a4mA\uff5e7mA\uff0c\u8fdb\u5165\u7a7a\u95f2\u6a21\u5f0f\u65f6\u5176\u529f\u8017\u964d\u81f32mA\uff0c\u5f53\u8fdb\u5165\u6389\u7535\u6a21\u5f0f\u65f6\u529f\u8017\u53ef\u964d\u81f30.1μA\u4ee5\u4e0b\u3002<\/p>\n
\n\t2.\u4f11\u7720\u6a21\u5f0f<\/p>\n
\n\t\u5f53\u5355\u7247\u673a\u8fdb\u5165\u6389\u7535\u6a21\u5f0f\u65f6\uff0c\u5916\u90e8\u6676\u632f\u505c\u632f\u3001CPU\u3001\u5b9a\u65f6\u5668\u3001\u4e32\u884c\u53e3\u5168\u90e8\u505c\u6b62\u5de5\u4f5c\uff0c\u53ea\u6709\u5916\u90e8\u4e2d\u65ad\u7ee7\u7eed\u5de5\u4f5c\u3002\u4f7f\u5355\u7247\u673a\u8fdb\u5165\u4f11\u7720\u6a21\u5f0f\u7684\u6307\u4ee4\u5c06\u6210\u4e3a\u4f11\u7720\u524d\u5355\u7247\u673a\u6267\u884c\u7684\u6700\u540e\u4e00\u6761\u6307\u4ee4\uff0c\u8fdb\u5165\u4f11\u7720\u6a21\u5f0f\u540e\uff0c\u82af\u7247\u4e2d\u7a0b\u5e8f\u672a\u6d89\u53ca\u5230\u7684\u6570\u636e\u5b58\u50a8\u5668\u548c\u7279\u6b8a\u529f\u80fd\u5bc4\u5b58\u5668\u4e2d\u7684\u6570\u636e\u90fd\u5c06\u4fdd\u6301\u539f\u503c\u3002\u53ef\u7531\u5916\u90e8\u4e2d\u65ad\u4f4e\u7535\u5e73\u89e6\u53d1\u6216\u7531\u4e0b\u964d\u6cbf\u89e6\u53d1\u4e2d\u65ad\u6216\u8005\u786c\u4ef6\u590d\u4f4d\u6a21\u5f0f\u6362\u9192\u5355\u7247\u673a\uff0c\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u4f7f\u7528\u4e2d\u65ad\u5524\u9192\u5355\u7247\u673a\u65f6\uff0c\u7a0b\u5e8f\u4ece\u539f\u6765\u505c\u6b62\u5904\u7ee7\u7eed\u8fd0\u884c\uff0c\u5f53\u4f7f\u7528\u786c\u4ef6\u590d\u4f4d\u5524\u9192\u5355\u7247\u673a\u65f6\uff0c\u7a0b\u5e8f\u5c06\u4ece\u5934\u5f00\u59cb\u6267\u884c\u3002
\n\t <\/p>\n
\n\t![\"\u5355\u7247\u673a\u7a7a\u95f2\u6a21\u5f0f\u548c\u6389\u7535\u6a21\u5f0f\u7684\u8bbe\u5b9a\u65b9\u6cd5\"](\"http:\/\/www.szryc.com\/uploads\/allimg\/190320\/1A9503C8-0.png\")
<\/p>\n
\n\t\u4e0b\u9762\u7684\u4f8b\u5b50\u6f14\u793a\u5355\u7247\u673a\u8fdb\u5165\u7a7a\u95f2\u548c\u4f11\u7720\u6a21\u5f0f\uff0c\u5e76\u4e14\u6f14\u793a\u51fa\u4ece\u7a7a\u95f2\u548c\u4f11\u7720\u6a21\u5f0f\u4e2d\u5524\u9192\u7684\u8fc7\u7a0b\u3002<\/p>\n
\n\t\u3010\u4f8b\u3011\uff1a\u5728TX-1C\u5b9e\u9a8c\u677f\u4e0a\u5b8c\u6210\u5982\u4e0b\u63cf\u8ff0\uff0c\u5f00\u542f\u4e24\u4e2a\u5916\u90e8\u4e2d\u65ad\uff0c\u8bbe\u7f6e\u4f4e\u7535\u5e73\u89e6\u53d1\u4e2d\u65ad\uff0c\u7528\u5b9a\u65f6\u5668\u8ba1\u6570\u5e76\u4e14\u663e\u793a\u5728\u6570\u7801\u7ba1\u7684\u524d\u4e24\u4f4d\uff0c\u5f53\u8ba1\u52305\u65f6\uff0c\u4f7f\u5355\u7247\u673a\u8fdb\u5165\u7a7a\u95f2\uff08\u4f11\u7720\uff09\u6a21\u5f0f\uff0c\u540c\u65f6\u5173\u95ed\u5b9a\u65f6\u5668\uff0c\u5f53\u5355\u7247\u673a\u54cd\u5e94\u5916\u90e8\u4e2d\u65ad\u540e\uff0c\u4ece\u7a7a\u95f2\uff08\u4f11\u7720\uff09\u6a21\u5f0f\u8fd4\u56de\uff0c\u540c\u65f6\u5f00\u542f\u5b9a\u65f6\u5668\u3002<\/p>\n
\n\t\u65b0\u5efa\u6587\u4ef6part3.4.1.c\uff0c\u7a0b\u5e8f\u4ee3\u7801\u5982\u4e0b\uff1a<\/p>\n
\n\t#include\/\/52\u7cfb\u5217\u5355\u7247\u673a\u5934\u6587\u4ef6<\/p>\n
\n\t#defineucharunsignedchar<\/p>\n
\n\t#defineuintunsignedint<\/p>\n
\n\tsbitdula=P2^6;\/\/\u7533\u660eU1\u9501<\/u>\u5b58\u5668\u7684\u9501\u5b58\u7aef<\/p>\n
\n\tsbitwela=P2^7;\/\/\u7533\u660eU2\u9501\u5b58\u5668\u7684\u9501\u5b58\u7aef<\/p>\n
\n\tucharcodetable\uff3b\uff3d={<\/p>\n
\n\t0x3f\uff0c0x06\uff0c0x5b\uff0c0x4f\uff0c<\/p>\n
\n\t0x66\uff0c0x6d\uff0c0x7d\uff0c0x07\uff0c<\/p>\n
\n\t0x7f\uff0c0x6f\uff0c0x77\uff0c0x7c\uff0c<\/p>\n
\n\t0x39\uff0c0x5e\uff0c0x79\uff0c0x71};<\/p>\n
\n\tucharnum;<\/p>\n
\n\tvoiddelayms\uff08uint\uff09;<\/p>\n
\n\tvoiddisplay\uff08uchars<\/u>hi\uff0cucharge\uff09\/\/\u663e\u793a\u5b50\u51fd\u6570<\/p>\n
\n\t{<\/p>\n
\n\tdula=1;<\/p>\n
\n\tP0=table\uff3bshi\uff3d;\/\/\u9001\u5341\u4f4d\u6bb5\u9009\u6570\u636e<\/p>\n
\n\tdula=0;<\/p>\n
\n\tP0=0xff;\/\/\u9001\u4f4d\u9009\u6570\u636e\u524d\u5173\u95ed\u6240\u6709\u663e\u793a\uff0c\u9632\u6b62\u6253\u5f00\u4f4d\u9009\u9501\u5b58\u65f6<\/p>\n
\n\twela=1;\/\/\u539f\u6765\u6bb5\u9009\u6570\u636e\u901a\u8fc7\u4f4d\u9009\u9501\u5b58\u5668\u9020\u6210\u6df7\u4e71<\/p>\n
\n\tP0=0xfe;\/\/\u9001\u4f4d\u9009\u6570\u636e<\/p>\n
\n\twela=0;<\/p>\n
\n\tdelayms\uff085\uff09;\/\/\u5ef6\u65f6<\/p>\n
\n\tdula=1;<\/p>\n
\n\tP0=table\uff3bge\uff3d;\/\/\u9001\u4e2a\u4f4d\u6bb5\u9009\u6570\u636e<\/p>\n
\n\tdula=0;<\/p>\n
\n\tP0=0xff;<\/p>\n
\n\twela=1;<\/p>\n
\n\tP0=0xfd;<\/p>\n
\n\twela=0;<\/p>\n
\n\tdelayms\uff085\uff09;<\/p>\n
\n\t}<\/p>\n
\n\tvoiddelayms\uff08uintxms\uff09<\/p>\n
\n\t{<\/p>\n
\n\tuinti<\/u>\uff0cj;<\/p>\n
\n\tfor\uff08i=xms;i\u300b0;i--\uff09\/\/i=xms\u5373\u5ef6\u65f6\u7ea6xms\u6beb\u79d2<\/p>\n
\n\tfor\uff08j=110;j\u300b0;j--\uff09;<\/p>\n
\n\t}<\/p>\n
\n\tvoidmai<\/u>n\uff08\uff09<\/p>\n
\n\t{<\/p>\n
\n\tuchara\uff0cb\uff0cnum1;<\/p>\n
\n\tTMOD=0x01;\/\/\u8bbe\u7f6e\u5b9a\u65f6\u56680\u4e3a\u5de5\u4f5c\u65b9\u5f0f1\uff0800000001\uff09<\/p>\n
\n\tTH0=\uff0865536-50000\uff09\/256;<\/p>\n
\n\tTL0=\uff0865536-50000\uff09%256;<\/p>\n
\n\tEA=1;<\/p>\n
\n\tET0=1;<\/p>\n
\n\tEX0=1;<\/p>\n
\n\tEX1=1;<\/p>\n
\n\tTR0=1;<\/p>\n
\n\twhile\uff081\uff09<\/p>\n
\n\t{<\/p>\n
\n\tif\uff08num\u300b=20\uff09<\/p>\n
\n\t{<\/p>\n
\n\tnum=0;<\/p>\n
\n\tnum1++;<\/p>\n
\n\tif\uff08num1==6\uff09<\/p>\n
\n\t{<\/p>\n
\n\tET0=0;<\/p>\n
\n\tPCON=0x02;\uff08\u6216PCON=0x01;\uff09<\/p>\n
\n\t}<\/p>\n
\n\ta=num1\/10;<\/p>\n
\n\tb=num1%10;<\/p>\n
\n\t}<\/p>\n
\n\tdisplay\uff08a\uff0cb\uff09;<\/p>\n
\n\t}<\/p>\n
\n\t}<\/p>\n
\n\tvoidt<\/u>imer0\uff08\uff09inte<\/u>rrupt1<\/p>\n
\n\t{<\/p>\n
\n\tTH0=\uff0865536-50000\uff09\/256;<\/p>\n
\n\tTL0=\uff0865536-50000\uff09%256;<\/p>\n
\n\tnum++;<\/p>\n
\n\t}<\/p>\n
\n\tvoidex_int0\uff08\uff09interrupt0<\/p>\n
\n\t{<\/p>\n
\n\tPCON=0;<\/p>\n
\n\tET0=1;<\/p>\n
\n\t}<\/p>\n
\n\tvoidex_int1\uff08\uff09interrupt2<\/p>\n
\n\t{<\/p>\n
\n\tPCON=0;<\/p>\n
\n\tET0=1;<\/p>\n
\n\t}<\/p>\n
\n\t\u5206\u6790\uff1a<\/p>\n
\n\t\uff081\uff09EA=1;\u5f00\u603b\u4e2d\u65ad<\/p>\n
\n\tET0=1;\u5f00\u5b9a\u65f6\u56680\u4e2d\u65ad<\/p>\n
\n\tEX0=1;\u5f00\u5916\u90e8\u4e2d\u65ad0<\/p>\n
\n\tEX1=1;\u5f00\u5916\u90e8\u4e2d\u65ad1<\/p>\n
\n\tTR0=1;\u542f\u52a8\u5b9a\u65f6\u56680<\/p>\n
\n\t\uff082\uff09\u4e3b\u7a0b\u5e8f\u4e2d\u6709“ET0=0;”\u4e0b\u53e5\u662f“PCON=0x02;”\u610f\u601d\u662f\u5728\u8fdb\u5165\u4f11\u7720\u6a21\u5f0f\u4e4b\u524d\u8981\u5148\u628a\u5b9a\u65f6\u5668\u5173\u95ed\uff0c\u8fd9\u6837\u65b9\u53ef\u4e00\u76f4\u7b49\u5f85\u5916\u90e8\u4e2d\u65ad\u7684\u4ea7\u751f\uff0c\u5982\u679c\u4e0d\u5173\u95ed\u5b9a\u65f6\u5668\uff0c\u5b9a\u65f6\u5668\u7684\u4e2d\u65ad\u540c\u6837\u4e5f\u4f1a\u5524\u9192\u5355\u7247\u673a\uff0c\u4f7f\u5176\u9000\u51fa\u4f11\u7720\u6a21\u5f0f\uff0c\u8fd9\u6837\u6211\u4eec\u4fbf\u770b\u4e0d\u51fa\u8fdb\u5165\u4f11\u7720\u6a21\u5f0f\u548c\u8fd4\u56de\u7684\u8fc7\u7a0b\u3002<\/p>\n
\n\t\uff083\uff09voidex_int0\uff08\uff09interrupt0<\/p>\n
\n\t{<\/p>\n
\n\tPCON=0;<\/p>\n
\n\tET0=1;<\/p>\n
\n\t}<\/p>\n
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