MOV A,#00H DEC A DEC A MOV 18H ,A(18H)=
MOV R2,R7 MOV A,@R2 DEC DPTR CPL 2FH MOV 20H.7,F0 PUSH DPTR
MOV A,3DH ; SWAP A ; RRC A ; RRC A ; ANL A,#03H; DEC A ; 请问这
1.下列指令中,错误的指令是( ). A.MOV A,@R1 B.MOV 41H,@
3.下列指令中哪条是正确的( ) A.MOV DS,0200H B.MOV AX,[SI][DI] C.MOV BP,A
MOV A,#87H MOV A,#99H (A)=20H,(CY)=1,(AC)=1,(OV)=1
单片机借位 怎么回事 clr c mov a,#56h subb a,#0f8h mov 40h,a (40h)=?详细
判断与简单1,下面指令中20H所表示的含义相同吗?为什么?MOV A,#20H;MOV 30H,20H;MOV C,20
2、阅读下列程序,说明其功能.MOV R0,#30H MOV A,@R0 RL A MOV R1,A RL A RL A
单片机指令中CLR A与MOV A,#00H的区别?
1.MOV [BX],SI 2.MOV CX,AX 3.LEA BL,A 4.MOV BL,200H 5.LEA DI,
单片机 MOV DPTR,#1600H MOVX A,@DPTR MOVX @DPTR,A
MOV P0,A MOV A,R1 MOV P2,A