【单选题】【消耗次数：1】
DMA数据的传送是以（ ）为单位进行的。
①
字节
②
字
③
数据块
④
位
参考答案：
复制
纠错
相关题目
【单选题】
在采用DMA 方式高速传输数据时，数据传送是（）
①
在总线控制器发出的控制信号控制下完成的
②
在DMA 控制器本身发出的控制信号控制下完成的
③
由CPU 执行的程序完成的
④
由CPU 响应硬中断处理完成的
【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】
在微机系统中采用DMA方式传输数据时，数据传送是
①
由CPU控制完成
②
由执行程序（软件）完成
③
由DMAC发出的控制信号控制下完成的
④
由总线控制器发出的控制信号控制下完成的
随机题目
【单选题】
“If we fail to act now,” said Tom, “We’ll find ourselves ____ in action later on.”
①
paid back
②
paid for
③
paid up
④
paid off
【单选题】
The statement had to be delivered to someone who could
____ it to the press.
①
relieve
②
release
③
emit
④
discharge
【单选题】
When the idea of winning in sports is carried to excess, ____ competition can turn into disorder and violence.
①
honestly
②
honest
③
honorable
④
honorary
【单选题】
He had acquired a（n）____ command of the English
language.
①
ordinary
②
immense
③
extraordinary
④
temporary
【单选题】
Danny left this ____ message on my answering machine: “I must see you. Meet me at twelve o’clock.” Did he mean noon or midnight?
①
ambiguous
②
responsible
③
implicit
④
thoughtful
【单选题】
Our ____ sensitivity decreases with age. By age
60, most people have lost 40 percent of their
ability to smell and 50 percent of their taste buds.
①
sensible
②
senseless
③
sensitive
④
sensory
【单选题】
The farmer said all their hopes _____ the support of the local government.
①
decided on
②
rested on
③
based on
④
founded on
【单选题】
The millions of calculations involved, ____ by hand,
would have lost all practical value by the time they
were finished.
①
had they been done
②
they had been done
③
having been done
④
they were done