ProGrads 卷別
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選擇國立政治大學 2026 · 考試 · 第 34 題
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A control register in an I/O device control
- (A)is written by the host to send output.
- (B)is written by the host to choose half-duplex communication.
- (C)contains status bits that can be read by the host.
- (D)is read by the host to get input.