系统图：程序：#includeat89x51.h>unsignedcharcodetable[]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x
includereg52h>unsignedcharcodetable[10]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,};显示数值
includereg52h>unsignedcharcodetable[10]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,};显示数值
includereg52h>unsignedcharcodetable[10]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90,};显示数值
includereg52h>unsignedcharcodetable[10]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};voidDelay(unsig
