【简答题】【消耗次数:1】
设(70H)=60H,(60H)=20H,P1为输入口,状态为0B7H,执行如下程序:MOV R0,#70H MOV A,@R0 MOV R1,A MOV B,@R1 MOV @R0,P1 。问R0、A、R1、B和70H中的数据是多少?
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相关题目
【单选题】 指令MOV R0, 20H执行前(R0)=30H,(20H)=38H,执行后(R0)=( ) 。
①  工作寄存器R0~R7  
②  专用寄存器SFR  
③  程序存贮器ROM
④  片内RAM的20H~2FH安节中的所有位和部分专用寄存器SFR的位
【单选题】 指令MOV A,@R0,执行前(A)=86H,(R0)=20H,(20H)=18H,执行后( )。
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②  A=F7H
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④  以上都不对
【单选题】 指令ADD A,R0 执行前(A)=38H,(R0)=54H,(C)=1 执行后,其结果为( )。
①  (A)=86H
②  (A)=20H
③  (A)=18H
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【单选题】 指令ADDC A,@R0 执行前(A)=38H,(R0)=30H,(30H)=FOH,(C)=1 执行后,其结果为( )。
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【简答题】 设 A={a,b,c,d}, A上的关系R1={,,},R2={,,,},求合成关系R1○R2。
【简答题】 设 A={a,b,c,d}, A上的关系R1={,,},R2={,,,},则合成关系R1○R2等于:[填空1]
【判断题】 设 A={a,b,c,d}, A上的关系R1={,,},R2={,,,},则合成关系R1○R2等于:{,,}。
①  正确
②  错误
【简答题】 执行下面的程序段后,AL=[填空1], BUF DW 2152H,3416H,5731H,4684H MOV BX, OFFSET BUF MOV AL, 3 XLAT
【单选题】 设 A={a,b,c,d}, A上的关系R1={a,aa,bb,d},R2={a,db,cb,dc,b},则合成关系R2○R1等于:
①  {a,aa,ca,d
②  {c,d
③  {a,aa,ba,d
④  {b,cb,dc,b}
【单选题】 设 A={a,b,c,d}, A上的关系R1={a,aa,bb,d},R2={a,db,cb,dc,b},则合成关系R1○R2等于:
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随机题目
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③  how
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①  Enjoy yourself!
②  Good luck!
③  Sounds like a good idea!
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③  父母很忙,但是也抽时间教导孩子明辨是非。
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①  trust
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①  go
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【单选题】 ________, the number of private cars will increase sharply in the coming couple of years.
①  Undoubtedly
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