【简答题】【消耗次数：1】
8253具有[填空1]个独立的[填空2]位计数器，各计数器都有[填空3]种不同的工作方式。
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相关题目
【简答题】
DMA控制器中的字计数器用于记录要传送数据块的[填空1]，每传输一个字后字计数器[填空2]
【单选题】
定时器T0作计数方式，选用工作方式1（16位计数器）则初始化编程指令为（ ） 。
①
MOV TMOD ，#01H
②
MOV TMOD ，10H
③
MOV TMOD ，#05H
④
MOV TCON ，#05H
随机题目
【单选题】
_____ people there are in a city, _____ I want to live there.
①
More; more
②
The more; the less
③
The more; the most
④
The more; the least
【单选题】
By the end of last week, we _____ all the units in this book.
①
learned
②
have learned
③
had learned
④
would have learned
【单选题】
He was _____ his late twenties when he found his first job.
①
in
②
after
③
after
④
from
【单选题】
I _____ a few high school classmates at KFC yesterday.
①
came across
②
came along
③
came to
④
came on
【单选题】
_____ is important for us to learn how to get along with others.
①
One
②
This
③
That
④
It
【单选题】
I _____ online games when my father came back.A. played B. am playing C. have played D. was playing
①
am playing
②
played
③
have played
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was playing
【判断题】
阅读课文II.Everybodys Jogging,判断正误All young joggers will be able to run in a mountain.
①
正确
②
错误
【判断题】
阅读课文II.Everybodys Jogging,判断正误3. When you jog, you shouldent go too far or too fast; it should be comfortable for you.
①
正确
②
错误
【判断题】
阅读课文II.Everybodys Jogging,判断正误5. Everyone must increase his distance half a mile every two weeks.
①
正确
②
错误