51单片机用计数器中断实现100以内的按键计数，汇编语言程序

试试下列程序：
ORG 0000H
JMP START
ORG 000BH
JMP T0_INT
;------------------------------
START:
MOV TMOD, #06H
MOV TH0, #255
MOV TL0, #255
MOV IE, #82H
SETB TR0
MOV R2, #0
MOV R3, #0
MOV DPTR, #TAB
;------------------------------
M_LOOP:
MOV A, R3
MOVC A, @A + DPTR
MOV P2, A
MOV A, R2
MOVC A, @A + DPTR
MOV P0, A
SJMP M_LOOP
;------------------------------
T0_INT:
JNB P3.4, T0_INT
INC R3
CJNE R3, #10, T0_END
MOV R3, #0
INC R2
CJNE R2, #10, T0_END
MOV R2, #0
T0_END:
RETI
;------------------------------
TAB: DB 0x3f, 0x06, 0x5b, 0x4f, 0x66, 0x6d, 0x7d, 0x07, 0x7f, 0x6f
;------------------------------
END

请尝试以下步骤：
ORG 0000H

JMP START

ORG 000BH

的JMP T0_INT

; --------------- ---------------

START：

MOV TMOD，＃06H

MOV TH0，＃255

MOV TL0，＃255 /> MOV IE，＃82H

SETB TR0

MOV R2，＃0

MOV R3，＃0

MOV DPTR，＃TAB

; ----- -------------------------

M_LOOP：

MOV A，R3

MOVC A，@ A + DPTR MOV P2，A

MOV A，R2

MOVC A，@ A + DPTR

MOV P0，一个

SJMP M_LOOP

---- --------------------------

T0_INT：

JNB P3.4，T0_INT

INC R3 /> CJNE R3，＃10，T0_END的

MOV R3，＃0

INC R2

CJNE R2，＃10，T0_END

MOV R2，＃0

T0_END： RETI

; ------------------------------

TAB：DB 0x3f ，0X06，0x5b，0x4f，0x66，0x6d，0x7d，为0x07，到0x7f，0x6f

-------------------------------------------------------------------------------- ---
END

COUNT EQU 30H
ORG 0000H
LJMP MAIN
ORG 0003H
LJMP EX0ISR
ORG 000BH
LJMP T0ISR
ORG 0030H
MAIN:
MOV SP,#5FH
MOV TMOD,#06H
MOV TH0,#0FFH
MOV TL0,#0FFH
SETB ET0
SETB EX0
SETB EA
SETB IT0
SETB TR0
MOV P0,#00H
MOV P2,#00H
MOV COUNT,#0
LOOP:
MOV DPTR,#LEDTAB
MOV A,COUNT
ADD A,#0
DA A
PUSH ACC
ANL A,#0F0H
SWAP A
MOVC A,@A+DPTR
MOV P0,A
POP ACC
ANL A,#0FH
MOVC A,@A+DPTR
MOV P2,A
SJMP LOOP
EX0ISR:
MOV COUNT,#0
RETI
T0ISR:
INC COUNT
MOV A,COUNT
CJNE A,#100,T0ISR1
MOV COUNT,#0
T0ISR1:
RETI
LEDTAB:
DB 3FH,06H,5BH,4FH,66H,6DH,7DH,07H,7FH,6FH,00H
END