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单片机应用技术 - 第2次作业-占总成绩的20%

课程名称:单片机应用技术 发布教师:张强 作业来源:第4单元 单片机指令系统 作业满分:100.0分 发布时间:2025-07-17 作业要求:--主观题要在答题区输入文字回答。不允许上传任何形式的附件或截图,否则0分计算。

单选题

1. 间接寻址的符号是( )。 (分值:2.0分)

A. $

B. @

C. #

D. *

2. 指令查找( )的方法称为寻址方式。 (分值:2.0分)

A. 操作码

B. 结果

C. 数据

D. 操作数

3. 下列特殊功能寄存器中可以位寻址的是( )。 (分值:2.0分)

A. TCON(88H)

B. TH0(8CH)

C. DPL(82H)

D. SBUF(99H)

4. 设(R0)=30H,(30H)=7EH。指令:MOV P0,#3FH 其目的操作数的寻址方式和指令执行结果是( )。 (分值:2.0分)

A. 间接寻址,(P0)=30H

B. 直接寻址,(P0)=3FH

C. 立即寻址,(P0)=3FH

D. 寄存器寻址,(P0)=7EH

5. 以下哪一条指令的写法是错误的( )。 (分值:2.0分)

A. MOV 50H,#0FC3DH

B. INC R0

C. MOV R0,#0FEH

D. MOV DPTR,#3F98H

6. 设(A)=55H,执行ANL A,#0FH 指令后,(A)=( )。 (分值:2.0分)

A. 5FH

B. 50H

C. AAH

D. 05H

7. 执行如下顺序程序后,结果(30H)=( )。 (分值:2.0分)

A. 8FH

B. E0H

C. 56H

D. BBH

8. 用指令的助记符、符号地址、标号等符号书写程序的语言称为( )。 (分值:2.0分)

A. 汇编语言

B. 低级语言

C. 高级语言

D. 机器语言

9. 下列循环程序功能:将内部RAM中30H开始的3个字节数据累加求和,结果不超过1个字节,存放在R3中。 若(30H)= 11H,(31H)= 23H,(32H)= 45H,程序执行后,结果是(R3)=( )。 (分值:2.0分)

A. 6AH

B. FFH

C. 23H

D. 79H

10. 如下分支程序是找最大数。程序执行后,结果(1000H)=( )。 (分值:2.0分)

A. 8FH

B. CCH

C. 56H

D. E0H

判断题

1. 执行返回指令时,返回的断点是调用指令的首地址。 (分值:2.0分)

2. END表示指令执行到此结束。 (分值:2.0分)

3. RET可以实现子程序调用的返回。 (分值:2.0分)

4. 访问特殊功能寄存器可以用直接寻址方式。 (分值:2.0分)

5. MCS-51指令中,MOVX为片外RAM传送指令。 (分值:2.0分)

6. 读内外ROM都用MOVC指令。 (分值:2.0分)

7. 伪指令产生对应的机器码,计算机可以直接执行。 (分值:2.0分)

8. 将37H单元的内容传送至A的指令是:MOV A,37H (分值:2.0分)

9. MCS-51单片机的指令格式中操作码与操作数之间必须用“,”分隔。 (分值:2.0分)

10. 位寻址区为内部RAM区的00H到FFH。 (分值:2.0分)

简答题/计算题

1. 数据存储器的地址空间如何划分? (分值:20.0分)

2. 什么是寻址方式?MCS-51单片机有哪几种寻址方式? (分值:20.0分)

3. 51单片机的堆栈是 向上增长 还是 向下增长?执行 PUSH 30H 和 POP 40H 时,SP如何变化? (分值:20.0分)

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广东开放大学 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 国家开放大学 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 渝粤教育 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