《微机原理与接口技术》18春在线作业2-0002
请判断ADC0809芯片的工作过程:
(1)STart信号启动A/D转换8路模拟开关输入的模拟量
(2)A、B、C选择输入通道地址,并由ALE发锁存信号
(3)OE信号开三态门,输出转换的数字信号
(4)A/D转换完毕,发转换完毕信号(EOC),可以作为中断信号
A:(2)(1)(4)(3)
B:(2)(1)(3)(4)
C:(1)(2)(4)(3)
D:(4)(3)(1)(2)
二进制数10110101B-11011011B的值(只取8位)是:
A:11001011B
B:01011010B
C:11011010B
D:01011011B
8088/8086存储器分段,每个段不超过:
A:64K个字
B:32K个字节
C:1兆个字节
D:64K个字节
<p><span style=”FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-family: ‘Times New Roman’; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA”>根据如下存储器的连接图(图中<span lang=”EN-US”>A15~A12</span>的值为<span lang=”EN-US”>0100</span>),请确定第二组的地址范围。</span></p><p><span style=”FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-family: ‘Times New Roman’; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA”><img width=”571″ height=”241″ alt=”” src=”http://file.open.com.cn/ItemDB/201611717716703.jpg” /></span></p>
A:<span lang=”ES” style=”FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-family: ‘Times New Roman’; mso-font-kerning: 1.0pt; mso-ansi-language: ES; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-weight: bold”>4000H~4FFFH</span>
B:<span lang=”ES” style=”FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; COLOR: black; mso-bidi-font-family: ‘Times New Roman’; mso-font-kerning: 1.0pt; mso-ansi-language: ES; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA”>5000H~6FFFH</span>
C:<span lang=”ES” style=”FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; COLOR: black; mso-bidi-font-family: ‘Times New Roman’; mso-font-kerning: 1.0pt; mso-ansi-language: ES; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA”>4000H~5FFFH</span>
D:<span lang=”ES” style=”FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-family: ‘Times New Roman’; mso-font-kerning: 1.0pt; mso-ansi-language: ES; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-weight: bold”>5000H~5FFFH</span>
8253 中计数器中初值寄存器的作用是:
A:保存控制字中写入的计数值
B:提供当前计数器的状态
C:按控制字确定该计数器的工作方式
D:接收计数初值,按CLK脉冲减一计数,是否计数受GATE信号控制
十六进制数51FDH+26C4H的值是:
A:78B1H
B:87B1H
C:78C1H
D:87C1H
<p><span style=”FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-family: ‘Times New Roman’; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-size: 12.0pt”>下面两个传送指令语句中源操作数寻址方式是:</span></p><span style=”FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-family: ‘Times New Roman’; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-size: 12.0pt”><div>VAR1<span> DW 32H</span></div><div>VAR2<span> EQU 32H</span></div><div>┇</div><div>MOV<span> AX</span>,<span>VAR1</span></div><div>MOV<span> BX</span>,<span>VAR2</span></div></span>
A:<span style=”FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; COLOR: black; mso-bidi-font-family: ‘Times New Roman’; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-size: 12.0pt”>都是立即数寻址</span>
B:<span style=”FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; COLOR: black; mso-bidi-font-family: ‘Times New Roman’; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-size: 12.0pt”>前一条指令是立即数寻址,后一条指令是直接寻址</span>
C:<span style=”FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; COLOR: black; mso-bidi-font-family: ‘Times New Roman’; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-size: 12.0pt”>前一条指令是直接寻址,后一条指令是立即数寻址</span>
D:<span style=”FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; COLOR: black; mso-bidi-font-family: ‘Times New Roman’; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-size: 12.0pt”>都是直接寻址</span>
<p><span style=”FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-family: ‘Times New Roman’; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA”>实现将</span><span lang=”ES” style=”FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-family: ‘Times New Roman’; mso-font-kerning: 1.0pt; mso-ansi-language: ES; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA”>DX</span><span style=”FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-family: ‘Times New Roman’; mso-font-kerning: 1.0pt; mso-ansi-language: ES; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA”>:<span lang=”ES”>AX</span></span><span style=”FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-family: ‘Times New Roman’; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA”>中存放的</span><span lang=”ES” style=”FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-family: ‘Times New Roman’; mso-font-kerning: 1.0pt; mso-ansi-language: ES; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA”>32</span><span style=”FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-family: ‘Times New Roman’; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA”>位数扩大四倍</span><span style=”FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-family: ‘Times New Roman’; mso-font-kerning: 1.0pt; mso-ansi-language: ES; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA”>,</span><span style=”FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-family: ‘Times New Roman’; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA”>正确的程序段是:</span></p>
A:<p>SHL<span> AX</span>,<span>2</span></p><p><span>ROL<span> DX</span>,<span>2</span></span></p>
B:<div>RCL<span> AX</span>,<span>2</span></div><div><span><span>SHL<span> DX</span>,<span>2</span></span></span></div>
C:<div>MOV<span> CX</span>,<span>2</span></div>LOP:<span>SHL<span> AX</span>,1</span> <div><span><span>RCL<span> DX</span>,<span>1</span></span></span></div><div><span><span><span><span>LOOP<span> LOP</span></span></span></span></span></div>
D:<div>SHL<span> AX</span>,<span>1</span></div><div>SHL<span> AX</span>,<span>1</span></div>RCL<span> DX</span>,<span>1</span> <div><span><span>RCL<span> DX</span>,<span>1</span></span></span></div>
二进制数10110111B-11010011B的值(只取8位)是:
A:11100101B
B:01100100B
C:11100100B
D:01100101B
<p>标志寄存器中属于控制标志位的是( )。</p>
A:<p>DF,OF,SF </p>
B:<p>OF,CF,PF</p>
C:<p>AF,OF,SF</p>
D:<p>DF,IF,TF0、0</p>
判断8253的计数器1工作在方式3,读/ 写指示为先低后高,按BCD码计数格式方式控制字。
A:92H
B:77H
C:82H
D:78H
<p><span style=”FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-family: ‘Times New Roman’; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: ‘Times New Roman’; mso-hansi-font-family: ‘Times New Roman'”>按如下简单的无条件</span><span lang=”EN-US” style=”FONT-SIZE: 10.5pt; FONT-FAMILY: ‘Times New Roman’,’serif’; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-size: 12.0pt; mso-fareast-font-family: 宋体”>I/O </span><span style=”FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-family: ‘Times New Roman’; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: ‘Times New Roman’; mso-hansi-font-family: ‘Times New Roman'”>传输方式连接图,确定方式控制字。</span></p><p><span style=”FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-family: ‘Times New Roman’; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-size: 12.0pt; mso-ascii-font-family: ‘Times New Roman’; mso-hansi-font-family: ‘Times New Roman'”><img width=”409″ height=”135″ alt=”” src=”http://file.open.com.cn/ItemDB/201611717815665.jpg” /></span></p>
A:<span lang=”EN-US” style=”FONT-SIZE: 10.5pt; FONT-FAMILY: 宋体; mso-bidi-font-family: ‘Times New Roman’; mso-font-kerning: 1.0pt; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA; mso-bidi-font-size: 12.0pt”>92H</span>
B:77H
C:82H
D:72H
十六进制数ECH转换为十进制数的值是:
A:236
B:235
C:234
D:237
二进制数10010111B与11010011B求和后,PF与OF标志位的值为:
A:1、1
B:0、1
C:1、0
D:0、0
二进制数101101转换为十六进制数的值是:
A:55H
B:2DH
C:2CH
D:B1H
二进制数101101转换为十进制数的值是:
A:44
B:55
C:45
D:54
以下哪些关于中断叙述是正确的?
A:完整的中断必须包括以下过程:中断申请、中断响应、中断返回
B:微处理器包括外部中断源与内部中断源
C:中断系统能够实现中断的嵌套与能够实现中断的优先级处理
D:8086的内部中断源包括非屏蔽中断与屏蔽中断申请
与MOV AX,OFFSET VAR指令不等效的指令是:
A:MOV BX,VAR
B:LES BX,VAR
C:LES BX,VAR
D:LEA BX,VAR
微处理器与I/O口的数据传输方式包括:
A:中断控制方式(中断传输方式)
B:直接存储器访问方式(DMA)
C:无条件传输方式,
D:查询传输方式
下面保留字中,为伪指令的有:
A:INT
B:DB
C:PROC
D:DH
下面哪些叙述符合8088/8086微处理器最小模式的组成:
A:8259A中断控制器,控制外设中断的申请等
B:8282地址锁存器(三片),获得地址总线及控制信号
C:8288总线控制器,转换控制总线信号,增加控制总线的负载能力
D:8286功率放大接收器(二片),获得数据总线
完成AL寄存器与CF标志位清零的指令是:
A:MOV AL,00
B:AND AL,00
C:XOR AL,AL
D:SUB AL,AL
乘法运算指令执行后, 影响的标志位是:
A:OF
B:SF
C:CF
D:ZF
8255A数据端口B的工作方式包括:
A:双向传输方式
B:基本输入/输出方式
C:选通输入/输出方式
D:以上三条都是
设定某数据区为16个字,起始地址为5AEC:D5EA,该数据区数据字的首物理地址( )与末物理地址( )。
A:684AAH
B:130D6H
C:684C8H
D:130F4H
下面哪些叙述符合按I/O端口寻址的特点:
A:?(1)独立的I/O控制结构 (2)独立I/O指令,程序易读
B:(1)控制逻辑简单?(2)指令功能强
C:(1)控制逻辑复杂?(2)指令功能比较弱
D:(1)指令执行时间长(20T)?(2)占部分内存
数据段中语句如下:
BUF1 DB 3 DUP(0,2 DUP (1,2),3)
COUNT EQU $ – BUF1
与符号COUNT不等价的值是:
A:6
B:18
C:16
D:.8
下列指令中操作数在代码段中的是:
A:MOV AL,42H
B:ADD AL,BL
C:SUB DS:[1234H],DI
D:1NC [DI]
下面源程序语句中,( )包含有寄存器间接寻址方式。
A:MOV AX,SEG[SI]
B:MOV DS,AX
C:MOV BYTE PTR[BX],AL
D:MOV AX,WORD PTR[DI]
逻辑运算指令执行后,影响的标志位是:
A:AF
B:SF
C:ZF
D:PF
下面可以形成分支条件的指令有:
A:CMP
B:MOV
C:AND
D:SUB