题目内容
当2个或2个以上的输入同时为有效信号时，优先编码器将只对优先级别高的输入进行编码。
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二进制译码器的作用是将输入的代码译成特定的信号输出。
Here are some comments about the press. To what extent do you agree or disagree?I think a lot of newspapers are unreliable. By the time you get them the headlines are out-of-date and they are usually just full of advertisements and light-hearted, usually exaggerated, stories about film stars.
The first thing I do in the morning is to read the local paper. It’s packed with news about my city, and it’s usually quite accurate, so I know exactly what’s going on.
I don’t buy newspapers. There’s just too much to read in them, so it’s a waste of money, and I also think they’re environmentally damaging. I mean, millions of trees are cut down every year, aren’t they?
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