The data ready line can be used to flag the processor when a keystroke is ready to be read .
当按下的键准备读出时，数据准备线可用来作处理器的标志。
The data ready line can be used to flag the processor when a keystroke is ready to be read.
当按下的键准备读出时，数据准备线可用来作处理器的标志。
The data ready line can be used to flag the processor when a keystroke is ready to be read.
当按下的键准备读出时，数据准备线可用来作处理器的标志。
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