求有51单片机的开平方子程序答:KPF:MOV 70H,#03H MOV 71H,#0E8H KPF1:MOV R1,70H MOV R2,71H MOV R3,#00H MOV R4,#00H MOV R5,70H MOV R6,71H LCALL TWOBITMUL MOV A,R2 MOV R1,A MOV A,R3 MOV R2,A MOV A,R4 MOV R3,A MOV R4,72H MOV R5,73H MOV R6,74H LCALL THREECOMPARE JNC KPF2 MOV R1,...
用单片机汇编语言怎样实现按下一个按键,数码管上显示出按下的具体时间...答:MOV DPTR,#WORDTAB MOVC A,@A+DPTR MOV P0,A LCALL DELAY SJMP LOOP L1: MOV R3,#0FEH MOV R1,#00H L2: MOV A,R3 MOV P1,A MOV A,P1 SWAP A MOV R4,A SETB C MOV R5,#04H MOV R4,#04H L3: RRC A JNC KEYIN INC R1 DJNZ R5,L3 MOV A,R3 SETB C RLC A MO...