各位大侠帮忙做下这几道单片机的题可以吗?
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各位大侠帮忙做下这几道单片机的题可以吗?
1.执行下列程序段后,(A)= ________,(B)= ________
MOV A,#23H
MOV B,#3
MUL AB
ANL A,#0FH
2.执行下列程序段后,P1=________
MOV P1,#5DH
CPL P1.1
CPL P1.2
CLR P1.6
SETB P1.7
3.执行下列程序段后,(A)= ________
MOV A,#34H
INC A
ANL A,#43H
RR A
4.假定(A)=7AH,CY=1,执行下列程序段后,(30H)=______,(A)=_______
ANL A,#0FFH
MOV 30H,A
XRL A,30H
RLC A
SWAP A
1.执行下列程序段后,(A)= ________,(B)= ________
MOV A,#23H
MOV B,#3
MUL AB
ANL A,#0FH
2.执行下列程序段后,P1=________
MOV P1,#5DH
CPL P1.1
CPL P1.2
CLR P1.6
SETB P1.7
3.执行下列程序段后,(A)= ________
MOV A,#34H
INC A
ANL A,#43H
RR A
4.假定(A)=7AH,CY=1,执行下列程序段后,(30H)=______,(A)=_______
ANL A,#0FFH
MOV 30H,A
XRL A,30H
RLC A
SWAP A
![各位大侠帮忙做下这几道单片机的题可以吗?](/uploads/image/z/3692971-19-1.jpg?t=%E5%90%84%E4%BD%8D%E5%A4%A7%E4%BE%A0%E5%B8%AE%E5%BF%99%E5%81%9A%E4%B8%8B%E8%BF%99%E5%87%A0%E9%81%93%E5%8D%95%E7%89%87%E6%9C%BA%E7%9A%84%E9%A2%98%E5%8F%AF%E4%BB%A5%E5%90%97%3F)
1.A=9,B=0
2.P1=99H
3.A=0
4.(30H)=7AH,(A)=10H
2.P1=99H
3.A=0
4.(30H)=7AH,(A)=10H