0到99可增减计数器的单片机系统。求汇编语言程序。在线等。特急。_百...答:CJNE A,#100,NEXT MOV Count,#0 LJMP NEXT WT1:JB KEY2,WT2 LCALL DELY10MS JB KEY2,WT2 JNB KEY2,MOV A,Count JZ WT11 DEC Count LJMP NEXT WT11:MOV Count,#99 WT2:LJMP NEXT DELAY:MOV R3,#6 DELAY1:MOV R4,#250 DJNZ R4,DJNZ R3,DELAY1 RET DELY10MS: MOV R6,#20 D...