【判断题】【消耗次数:1】
8051单片机的P0口可作为低8位地址总线使用。
正确
错误
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相关题目
【判断题】 8051单片机的P1口可作为高8位地址总线使用。
①  正确
②  错误
【判断题】 P0端口在作为地址总线使用时,提供的是高8位地址。
①  正确
②  错误
【单选题】 P0口作数据线和低8位地址线时 。
①  应外接上拉电阻
②  不能作I/O口
③  能作I/O口
④  应外接高电平
【单选题】 8051单片机的P0口可以驱动____个LSTTL负载。
①  4
②  8
③  16
④  32
【单选题】 8051单片机的并行I/O接口可以做扩展地址总线的高8位输出接口。
①  P0
②  P1
③  P2
④  P3
【单选题】 8051单片机的P0口驱动拉电流负载时必须接____。
①  电源
② 
③  下拉电阻
④  上拉电阻
【单选题】 8051单片机的P2口除作为输入/输出接口使用外,还可以作为____使用。
①  低8位地址总线
②  高8位地址总线
③  数据总线
④  控制总线
【判断题】 51单片机的P0口既可以做数据口线又可以做为地址口线
①  正确
②  错误
【单选题】 单片机的P0、P1口作输入用途之前必须 ____。
①  在相应端口先置1
②  在相应端口先置0
③  外接高电平
④  外接上拉电阻
【单选题】 单片机的P0、P1口作输入用途之前必须。
①  在相应端口先置1
②  在相应端口先置0
③  外接高电平
④  外接上拉电阻
随机题目
【单选题】 Happy New Year to you. ____________
①  The same to you.
②  Yes, I am happy.
③  What about you.
④  Very well, thanks.
【单选题】 She was so _____ in her job that she didn’t hear someone knocking at the door.
①  attracted
②  drawn
③  absorbed
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【单选题】 A good public speaker can _______ the audience (听众)at the very beginning.
①  convey
②  portray
③  exaggerate
④  hook
【单选题】 How was your trip to London, Jane?________
①  Oh, wonderful indeed.
②  I went there alone.
③  The guide showed me the way.
④  By plane and by bus.
【单选题】 Every means _______ been tried to solve the difficult problem.
①  has
②  have
③  is
④  are
【单选题】 the newcomers found it impossible to ____ themselves to the climate sufficiently to makepermanent homes in the new country.
①  suit
②  adapt
③  regulate
④  coordinate
【单选题】 Why not go and have dinner in a restaurant? ____________ It’s too expensive.
①  Why not?
②  I agree.
③  I am afraid not.
④  I’m sure.
【单选题】 Please write a report()the above subjects are to be covered.
①  which
②  in which
③  that
④  in that
【判断题】 判断线上的内容是否正确:I’m____inclined_____ to think that most children would like their teachers to be their friends rather than their commanders.
①  正确
②  错误
【判断题】 判断线上的内容是否正确:My ___conscience___ would really trouble me if I wore a fur coat.
①  正确
②  错误