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单片机试题库..pdf

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1、一.填空题:（共 133 分）1.87H 是用 8位二进制原码表示的十六进制数，其相应的十进制数是()2.MCS-51 系列单片机为（）位单片机3.87H 是用 8位二进制原码表示的十六进制数，其相应的十进制数是()4.87H 是用 8位二进制原码表示的十六进制数，其相应的十进制数是()5.当单片机复位时 PSW()H，这时当前的工作寄存器区是()区，R4所对应的存储单元地址为()H。6.MCS-51 系列单片机的典型芯片分别为（）（）（）。7.单片微型计算机由CPU、存储器和()口三部分组成。8.8031 内部数据存储器的地址范围是()，位地址空间的字节地址范围是()，对应的位地址范围是()

2、，外部数据存储器的最大可扩展容量是()。9.单片微型计算机由CPU、存储器和()口三部分组成。10.单片微型计算机由CPU、存储器和()口三部分组成。11.单片微型计算机由CPU、存储器和()口三部分组成。12.若 A中的内容为 88H，那么，P标志位为（）。13.若 A中的内容为 88H，那么，P标志位为（）。14.当单片机复位时 PSW （）H，SP=（），P0P3口均为（）电平。15.PC 复位后内容为：()。16.在内部 RAM 中可位寻址区中，位地址为 40H的位，该位所在字节的字节地址为（）17.8255 可以扩展()个并行口，其中()条口线具有位操作功能；18.若 A中的内容为

3、67H，那么，P标志位为()。19.PC 复位后内容为：()。20.8031 单片机有 4 个口，其中（）口可以直接应用于I/O 口21.假设 2 个一字节的十六进制数9FH，81H相加的和仍然为 8 位二进制数，那么相加后其进位标志为()（1 或 0），溢出标志为()（0 或 1）22.假设 2 个一字节的十六进制数9FH，81H相加的和仍然为 8 位二进制数，那么相加后其进位标志为()（1 或 0），溢出标志为()（0 或 1）23.通常、单片机上电复位时PC=()，SP=()；而工作寄存器则缺省采用第()组，这组寄存器的地址范围是从()。24.8031 单片机有 4 个口，其中（）口可以

4、直接应用于I/O 口25.单片机的内部 RAM 区中，可以位寻址的地址范围是()，特殊功能寄存器中，可位寻址的地址是()。26.MCS-51 特殊功能寄存器只能采用()寻址方式。文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文

5、档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT

6、4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3

7、J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 H

8、D10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X

9、8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8

10、ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y

11、3A7Z827.如果(A)=34H，(R7)=0ABH，执行 XCH A,R7；结果(A)=()，(R7)=()28.汇编语言中可以使用伪指令，它们不是真正的指令，只是用来对()。29.MOVX A，DPTR 源操作数寻址方式为()。30.汇编语言中可以使用伪指令，它们不是真正的指令，只是用来对()。31.累加器（A）=80H,执行完指令 ADD A,#83H后，进位位 C()。32.假定累加器 A的内容 30H，执行指令：1000H：MOVC A，A+PC 后，把程序存储器 _单元的内容送累加器A中33.ORL A,#0F0H 是将 A的高四位置 1,而低四位()。34.执行下列指令组后，累

12、加器（A）（）。它与 R1中内容的关系是（）MOV R1，87H MOV A，R1 CPL A INC A SETB ACC.7 35.如果(DPTR)=507BH，(SP)=32H，(30H)=50H，(31H)=5FH，(32H)=3CH,则执行下列指令后:POP DPH;POP DPL;POP SP;则：(DPH)=()；（DPL）=()；（SP）=()；36.执行下列程序段后，(P1)=()MOV P1，#5DH CPL P1.1 CPL P1.2 CLR P1.6 文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8

13、HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2

14、X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8

15、 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9

16、Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8

17、文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:C

18、T4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U

19、3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8SETB P1.7 37.JZ e 的操作码地址为 1000H，e=20H，它转移的目标地址为()。38.如果(DPTR)=507BH，(SP)=32H，(30H)=50H，(31H)=5FH，(32H)=3CH,则执行下列指令后:POP DPH;POP DPL;POP SP;则：(DP

20、H)=()；（DPL）=()；（SP）=()；39.累加器（A）=80H,执行完指令 ADD A,#83H后，进位位 C()。40.执行下列程序段后，(P1)=()MOV P1，#5DH CPL P1.1 CPL P1.2 CLR P1.6 SETB P1.7 41.已知(SP)=60H，子程序 SUBTRN 的首地址为 0345H，现执行位于 0123H的 ACALL SUBTRN 双字节指令后，(PC)=(),(61H)=(),(62H)=()。42.ORL A,#0F0H 是将 A的高四位置 1,而低四位()。43.如果(A)=58H，(R1)=49H，(49H)=79H，执行指令 XC

21、H A,R1 后；结果(A)=()，(49H)=()。44.已知 fosc=12MHz，T0 作为定时器使用时，其定时时间间隔为（）。45.8031 单片机中，T0 初始后让其开始计数，应将TCON 中的()位置 1 文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y

22、2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E

23、8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I

24、9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z

25、8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:

26、CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10

27、U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8

28、 HD10Y2X8V8E8 ZH4I9Y3A7Z846.8031 单片机中，T0 初始后让其开始计数，应将TCON 中的()位置 1 47.MCS-51 单片机 8031中有()个()位的定时/计数器，可以被设定的工作方式有四种。48.MCS-51 单片机中，在 IP=0 x00 时，优先级最高的中断是()，最低的是()。49.MCS-51 单片机中，在 IP=0 x00 时，优先级最高的中断是()，最低的是()。50.8031 有()级中断，()个中断源51.8031 有()级中断，()个中断源52.8031 单片机中 IP0EH，IE8DH时，CPU能响应的优先权最低的中断源是()53.

29、串行口方式 3 发送的第 9 位数据要事先写入（）寄存器的（）位。54.串行口的方式 0 的波特率为 ()。55.8031 的异步通信口为 ()（单工/半双工/全双工）56.MCS-51 串行口有 4 种工作方式，这可在初始化程序中用软件填写特殊功能寄存器()加以选择。文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A

30、7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编

31、码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R

32、10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8

33、Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD1

34、0Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V

35、8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH

36、4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z857.用串行口扩展并行口时，串行接口的工作方式应选为()。58.半导体存储器的最重要的两个指标是()和()。59.MCS-51 单片机访问外部存储器时，利用()信号锁存来自 P0口的低 8 位地址信号。60.MCS-51 单片机访问外部存储器时，利用()信号锁存来自 P0口的低 8 位地址信号。61.74LS138是具有 3 个输入的译码器芯片，其输出作为片选信号时，最多可以选中()片芯片。62.外围扩展芯片的选择方法有两种，它们分别是()和()。63.单片机中，常用作地址锁存器的芯片是（），

37、常用作地址译码器芯片是（）64.单片机中，常用作地址锁存器的芯片是（），常用作地址译码器芯片是（）65.写 8255A控制字时，需将 A1、A0置为()。66.A/D 芯片选择最主要的参数是()和()。67.若某 8 位 D/A 转换器的输出满刻度电压为+5V，则 D/A转换器的分辨率为()。68.KeiL C51 软件中，工程文件的扩展名是()，编译连接后生成可烧写的文件扩展名是().69.C51 系列有哪些（）文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT

38、4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3

39、J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 H

40、D10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X

41、8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8

42、ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y

43、3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文

44、档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z870.如要选择 2 组的工作寄存器交换数据，可先执行指令（）71.执行下列指令组后，(A)（）,标志位（OV）（）,(P)（）MOV A,#OB4H ADD A,#001H SUBB A,#51H 72.执行下列指令组后，(A)（）,标志位（OV）（）,(P)（）MOV A,#OB4H ADD A,#001H SUBB A,#51H 73.假定（S

45、P=60H）,(ACC=30H),(B=70H)。执行下列指令：PUSH ACC,PUSH B后，SP的内容为 ()，61H单元的内容为 ()，62H的内容为()。74.单片机的复位操作是()（高电平/低电平），单片机复位后，中断允许寄存器 IE 的值是()。75.单片机程序的入口地址是（），外部中断 1 的入口地址是()。76.若只需要开串行口中断，则IE 的值应设置为()，若需要将外部中断0 设置为下降沿触发，则执行的语句为()。二.选择题:（共 51 分）1.89S51 的单片机的堆栈指针（）A、只能位于内部 RAM 低 128B字节范围内B、可位于内部 RAM 低 256 字节范围内C

46、、可位于内部 ERRAM 内D、可位于内部 RAM 或外部 RAM 内2.在 CPU 内部，反映程序运行状态或反映运算结果的一些特征寄存器是（）文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8

47、HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2

48、X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8

49、 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9

50、Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8文档编码:CT4R10U3J8Z8 HD10Y2X8V8E8 ZH4I9Y3A7Z8

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