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【简答题】
采用定时器 / 计数器 T0 对外部脉冲进行计数,每计数 100 个脉冲后, T0 转为定时工作方式。定时 1ms 后,又转为计数方式,如此循环不止。假定 MCS-51 单片机的晶体振荡器的频率为 6MHz ,请使用方式 1 实现,要求编写出程序。
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反馈参考答案：
举一反三
【单选题】—_____? —He is helpful. He's always ready to help anyone in need. [ ]
A.
How's your new friend like?
B.
What's your new friend like
C.
How do you like your new friend?
D.
What do you think your new friend
【单选题】You'd better have your hair()before going to your friend's wedding.
A.
cutting
B.
cut
C.
to cut
【简答题】下列不是模型元素的是
【单选题】Who's your best friend? [ ]
A.
Let me help you.
B.
She's my English teacher.
C.
Sarah is my best friend.
相关题目：
【单选题】You'd better have your hair()before going to your friend's wedding.
A.
cutting
B.
cut
C.
to cut
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