【简答题】【消耗次数:1】
简述MCS-51的中断响应过程
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相关题目
【单选题】 MCS-51有中断源(  )。
①  5个
②  2个
③  3个
④  6个
【单选题】 MCS-51响应中断时,下面哪一个条件不是必须的()。
①  当前指令执行完毕
②  中断是开放的
③  没有同级或高级中断服务
④  必须有RETI指令
【单选题】 MCS-51单片机在同一优先级的中断源同时申请中断时,CPU首先响应( )。
①  外部中断0
②  外部中断1
③  定时器0中断
④  定时器1中断
【单选题】 MCS-51单片机CPU关中断语句是____。
①  EA=1
②  ES=1
③  EA=0
④  //EX0=1
【单选题】 要使MCS-51能够响应定时器串行接口中断,它的中断允许寄存器IE的内容应是()。
①  98H
②  84H
③  42
④  22H
【单选题】 MCS-51单片机的外部中断0的中断请求标志是____。
①  ET0
②  TF0
③  IT0
④  IE0
【单选题】 MCS-51单片机的中断源个数和中断优先级个数分别是( )。
①  5、2
②  5、3
③  6、2
④  6、3
【单选题】 MCS-51单片机的CPU是____。
①  4位
②  8位
③  16位
④  32位
【单选题】 MCS-51是____位的单片机。
①  8
②  16
③  32
④  64
【单选题】 MCS-51复位后,程序计数器PC= 。
①  0001H
②  0000H
③  0003H
④  0023H
随机题目
【单选题】 I’ll send you a short message as soon as I _______ in Hong Kong.
①  arrived
②  will arrive
③  am going to arrive
④  arrive
【单选题】 Good morning, Dr Johnson’s office. Can I help you?
①  Speaking, please
②  I’d like to make an appointment, please
③  Yes, go on
④  No, you can’t
【单选题】 The population of many Alaskan cities has __________ doubled in the past three years.
①  larger than
②  as great as
③  more than
④  as many as
【单选题】 The match was cancelled because most of the members __________ a match without a standard court.
①  objected to having
②  objected to have
③  were objected to have
④  were objected to having
【单选题】 - Shall we sit up here on the grass or down there near the water?
①  I’d rather stay here if you don’t mind
②  Sorry, I don’t like neither
③  Certainly, why not?
④  Yes, we like these two places
【单选题】 He said he would continue a support us _____ we didn’t break the rules.
①  as well as
②  as soon as
③  as far as
④  as long as
【单选题】 Can I have a look at your passport?
①  It is here
②  Here is it
③  Here you are
④  No, you can’t
【单选题】 Her sun – tanned face suggested that she __________ in excellent health.
①  be
②  is
③  was
④  were
【单选题】 Yesterday was my birthday. My mother .
①  made a cake to me
②  made a cake me
③  made for me a cake
④  made me a cake
【单选题】 That probably explains why public opinion is broadly __________ euthanasia (安乐死), or at least certain forms of it.
①  in relation to
②  in contrast to
③  in excess of
④  in favor of