单片机原理及接口技术课后习题第9章 答案讲解(5)

ANL A,#00000111B XRL A,#00000111B JNZ NO_RLSE MOV A,R4

CJNE A,#0E6H,NUM2 MOV R4,#01H JMP GODISP NUM2:

CJNE A,#0E5H,NUM3

MOV R4,#02H

JMP GODISP

NUM3:

CJNE A,#0E3H,NUM4 MOV R4,#03H

JMP GODISP

NUM4:

CJNE A,#0D6H,NUM5 MOV R4,#04H

JMP GODISP

NUM5:

CJNE A,#0D5H,NUM6 MOV R4,#05H

JMP GODISP

NUM6:

CJNE A,#0D3H,NUM7 MOV R4,#06H JMP GODISP

NUM7:

CJNE A,#0B6H,NUM8

MOV R4,#07H JMP GODISP

NUM8:

CJNE A,#0B5H,NUM9

MOV R4,#08H JMP GODISP

NUM9:

CJNE A,#0B3H,ENTER

MOV R4,#09H JMP GODISP ENTER: CJNE A,#076H,NUM0

MOV R4,#0AH

JMP ETR_DISP //ENTERNUM0:

CJNE A,#075H,STOP MOV R4,#00H

JMP GODISP

//1 //2

//3

//4

//5

//6

//7

//8

//9 //ENTER

按下，循环显示 //0