8251A可编程串行接口芯片具有((()、((溢出出)、((帧错或格式错错)的错误检测能
You can _____ some bottles of wine, or some chocolates, or a bunch of flowers.
A campus emergency ______ occur at any time of the day or night, weekend, or holiday, with little or no warning.
接口电路8255的特点是()。
①可编程的并行接口电路;
②可编程的串行接口电路;
③有4个端口、32根I/O线;
④有三种工作方式;
⑤每个8255接口电路需4个地址;
⑥工作方式0时无条件传送数据。
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