#define   uchar	unsigned char
#define   uint	unsigned int

sbit up = P3^3 ;  
sbit down = P3^5 ;
sbit enter = P3^4 ;
sbit AN = P3^6 ;

//ISD個端點(diǎn)引腳定義
sbit SS=P1^1; //片選
sbit SCLK=P1^0; //ISD4004時鐘
sbit MOSI=P1^2; //數(shù)據(jù)輸入
sbit MISO=P1^3; //數(shù)據(jù)輸出
sbit ISD_INT=P3^2; //中斷
sbit PR=P1^4;//PR=1 錄音 PR=0放音

//sbit LED = P1^6 ;