【单选题】【消耗次数：1】
8051单片机的波特率可变10位异步通信方式是指串行接口的。
①
工作方式0
②
工作方式1
③
工作方式2
④
工作方式3
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相关题目
【单选题】
串行工作方式1的波特率是()。
①
固定的，为时钟频率的十二分之一
②
固定的，为时钟频率的三十二分之一
③
固定的，为时钟频率的六十四分之一
④
可变的，通过定时器/计数器1的溢出率设定
【简答题】
MCS-51单片机的T1用作计数方式，工作方式1时，则工作方式控制字为TMOD=[填空1]。
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