【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。
参考答案：
复制
纠错
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】
A: How do you do? B: [填空]
①
Fine, thank you.
②
How do you do?
③
Not too bad.
④
Very well.
【单选题】
A: [填空]? B: This is Franco Rossi speaking.
①
Who are you
②
Who are you calling
③
Who is that
④
What do you want to say
【单选题】
A: Where there is a will, there is a way. B: [填空].
①
Thats right
②
Thats all right
③
All right
④
Not at all
【单选题】
A: Your newly bought bike is very fashionable. B: [填空].
①
Its very kind of you to say so
②
Yes, very good
③
No, not good
④
Really
【单选题】
A: Will you please give the note to him? B: [填空].
①
No，please not
②
Sorry，I dont
③
Certainly，Ill give it to him
④
Yes，please do
【单选题】
A: Hello, may I talk to the headmaster now? B: [填空].
①
Sorry, he is busy at the moment
②
No, you cant
③
Sorry, you cant
④
I dont know
【单选题】
A: [填空], but is this the way to the library? B: Yes, it is.
①
Im sorry
②
Pardon
③
Excuse me
④
Hello
【单选题】
A: What about going for a walk? B: [填空].
①
Thats all right
②
Walking is good to you
③
Why not? A good idea
④
Its up to you
【单选题】
A: Hi, Mark, Im glad you could come. B: [填空] A: No, you are right on time.
①
Its my great honor, thanks.
②
You are welcome. Am I the first?
③
Thanks. Do you have the time?
④
I hope Im not too late.
【单选题】
A: I was born in Hefei，but I studied in Beijing. [填空]? B: I was born in Beijing，but studied in Hefei.
①
What do you do
②
And you
③
Where were you
④
Do you