《计算机通信接口技术》(课程代码02369.pdf

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1、计算机通信接口技术(课程代码 02369)第一大题：单项选择题1、8254 计数器 0 的 OUT端输出宽度为一个时钟周期的单拍负脉冲信号，可选择的工作方式是A.方式 0 B.方式 2 C.方式 3 D.方式 4 参考答案：D 2、PC/XT机中，构成每个I/O 端口读写总线周期的微处理器时钟周期个数是A.3 个B.4 个C.5 个D.6 个参考答案：C 3、不是存储器映像I/O 端口编址方式特点的是A.访问存储器的指令也能访问I/O 端口B.端口地址不占用存储器地址空间C.对 I/O 端口的编程灵活方便D.I/O端口和存储器单元统一编址参考答案：B 4、在 PC/XT机设计中，只使用了端口地

2、址线A0A0,因此能访问的端口地址空间是A.640kb B.64kb C.32kb D.1kb 参考答案：D 5、通信工作方式中，仅支持数据在一个方向上传的是A.单工通信B.全双工通信C.半双工通信D.半双工和全双工通信参考答案：A 6、在 IN/OUT 指令中，当端口地址超过八位二进制数时，应采用的间接寻址寄存器是A.BX B.SI C.DX D.BP 参考答案：C 7、实模式下，一个中断申请信号输入引脚是A.1 个字节B.2 个字节C.3 个字节D.4 个字节参考答案：D 8、PC机中，CPU可屏蔽中断申请信号输入引脚是文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D

3、2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y

4、8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D

5、2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y

6、8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D

7、2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y

8、8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D

9、2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5A.INTR B.NMI C.HRQ D.HLDA 参考答案：A 9、程序控制I/O 接口一般A.需要数据端口和控制端口B.需要数据端口和状态端口C.需要状态端口和控制端口D.只需要数据端口参考答案：B 10、82C55B口工作在方式1 查询输入，CPU在读取数据之前应先测试的端口引脚是A.PC0 B.PC1 C.PC2 D.PC3 参考答案：B 11、82C55C口可以工作在A.方式 0 B.方式 1 C.方式 2 D.方式

10、 0 和方式 1 文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E

11、3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE

12、6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E

13、3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE

14、6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E

15、3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE

16、6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5参考答案：A 12、对 IBM PC 打印机接口采用查询方式编程，检查打印机是否空闲应查询的信号是A.STROBE信号B.ACK信号C.BUSY信号D.SLCT 信号参考答案：A 13、属于串行接口的是A.打印机接口B.GPIB 接口C.IEEE1284 接口D.RS-233C 接口参考答案：D 14、IEEE1284 标准定义的工作模式种

17、类有A.3 种B.4 种C.5 种D.6 种参考答案：C 15、不是异步串行通信特点的是A.在单根导线上将二进制数一位一位传送B.适合远距离传输C.采用数据块成帧进行传送文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y

18、8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D

19、2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y

20、8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D

21、2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y

22、8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D

23、2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5D.对时钟同步的要求不太严格参考答案：C 16、在 8254 的几种工作方式中，具有自动重装计数初值功能的是A.方式 0 B.方式 1 C.方式 3 D.方式 4 参考答案：C 17、在 R

24、S-232C 信号标准中，表示请求发送的信号是A.RTS B.CTS C.DTR D.DSR 参考答案：A 18、在 PC系统中用来管理可屏蔽硬件中断的芯片是A.82C55 B.8254 C.8259A D.INS8250 参考答案：C 19、要产生连续的方波信号，则8254 的一个计数器应工作在A.方式 2 文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4

25、R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码

26、:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4

27、R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码

28、:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4

29、R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码

30、:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5B.方式 3 C.方式 4 D.方式 5 参考答

31、案：B 20、实现一个接口同时和多个外设的握手联络传送，接口和外设间应采用的联络线至少是A.4 条B.3 条C.2 条D.1 条参考答案：B 21、端口编址采用隔离I/O 方式的优点是()A.访问存储器的指令也能访问I/O 端口B.端口地址不占用存储器地址空间C.对 I/O 端口的编程灵活方便D.I/O指令类型少参考答案：B 22、串行通信，数据只能由A 方传到 B 方，这种通信方式称为()A.单工B.半双工C.全双工D.半双工或全双工参考答案：A 23、存放中断号为60H 的中断向量的物理地址是()文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL

32、8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N

33、9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL

34、8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N

35、9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL

36、8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N

37、9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL

38、8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5A.240H243H B.180H183H C.240243 D.180183 参考答案：B 24、当代计算机（Pentium）采用更高速率的一种总线，足够传送新发展的快速数据业务，如图像和视频信号，此总线是()A.ISA 总线B.PCI 总线C.HOST总线D.USB总线参考答案：B 25、PC机可屏蔽硬件中断中,键盘中断的中断号是()A.06H B.07H C.08H D.09H 参考答案：D 26、Pentium 处理机的地址总线是32 位的，

39、其所能寻址的存储器空间为()A.20MB B.4GB C.16GB D.64GB 文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV

40、4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J

41、5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV

42、4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J

43、5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV

44、4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J

45、5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5参考答案：B 27、RS-449 标准采用的连接器引脚数是()A.9 B.25 C.37 D.48 参考答案：C 28、8250 接口芯片的主要功能是()A.仅完成串行数据到并行数据的转换B.仅完成并行数据到串行数据的转换C.发送时完成并-串转换，接收时完成串-并转换D.发送时

46、完成串-并转换，接收时完成并-串转换参考答案：C 29、74LS138 是()A.八位缓冲器B.单稳态触发器C.八位锁存器D.译码器参考答案：D 30、在 8254 的以下几种工作方式中,具有自动重装初值功能的是()A.方式 0 B.方式 1 C.方式 2 文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E

47、3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE

48、6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E

49、3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE

50、6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E3R3Y8 HV4I8Y4R4N9 ZE6N6D2F2J5文档编码:CL8Z8E