2. 计算机
  3. Any computer,be it a large PC or a small embedded computer,is useless if it has nomeans to interact witll the outside world．I／O

Any computer,be it a large PC or a small embedded computer,is useless if it has nomeans to interact witll the outside world．I／O

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问题 Any computer,be it a large PC or a small embedded computer,is useless if it has nomeans to interact witll the outside world．I／O communications for an embedded computerfrequently happen over a bus called the  (   )．
选项 A、I／O bus
B、Memory Bus
C、Device bus
D、Internal Bus
答案A
解析 参考译文：无论是PC系统还是嵌入式计算机系统，如果不和外部交互则会失去该计算机的意义。对于嵌入式计算机而言，I／O通信时和外部交互的总线称为I／O总线。
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