请问怎样用51单片机 汇编编写开关代码?答:ORG 0000H LJMP MAIN ORG 0030H MAIN:MOV A,P3 CJNE A,#15H,MAIN1 ;135输入,高有效 MOV P2,#0FH SJMP MAIN MAIN1:CJNE A,#2AH,MAIN2 ;246输入,高有效 MOV P2,#0F0H SJMP MAIN MAIN2:CJNE A,#0C0H,MAIN ;78输入,高有效 MOV P2,#0FFH SJMP MAIN END ...
求用汇编编制单片机程序,先显示50,要求按键控制,按一下加一键,变成51...答:DAT EQU 30H SCANLED EQU 32H FSDAT EQU 33H ORG 0000H LJMP MAIN ORG 000BH LJMP T0ISR ORG 0030H MAIN:MOV SP,#5FH MOV TMOD,#01H MOV TH0,#0F4H MOV TL0,#048H MOV P2,#00H MOV SCANLED,#0 MOV 30H,#5 MOV 31H,#0 MOV FSDAT,#50 SETB EA SETB ET0 SETB TR0 LOO...
51单片机汇编语言做16位除法答:;双字节无符号除法程序 (R5R2R3R4/R6R7)=(R2)R3R4 余数R6R7 ;入口: R5,R2,R3,R4,R6,R7 ;占用资源: ACC,B,F0 ;堆栈需求: 4字节 ;出口: (R2),R3,R4,R6,R7,OV NDIV42 : MOV A,R1 PUSH A MOV B,#00H NDV421 : MOV A,R2 CLR C SUBB A,R7 MOV R1,A MOV A,R5 SUBB A,...
51单片机汇编语言做16位除法答:;双字节无符号除法程序 (R5R2R3R4/R6R7)=(R2)R3R4 余数R6R7 ;入口: R5,R2,R3,R4,R6,R7 ;占用资源: ACC,B,F0 ;堆栈需求: 4字节 ;出口: (R2),R3,R4,R6,R7,OV NDIV42 : MOV A,R1 PUSH A MOV B,#00H NDV421 : MOV A,R2 CLR C SUBB A,R7 MOV R1,A MOV A,R5 SUBB A,...