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【单选题】
键盘和鼠标器是最基本的输入设备。下面有关键盘和鼠标器的叙述中，错误的是______。A.
目前PC所用的键盘和鼠标器接口大多是PS/2或USB
B.
键盘和鼠标器一样，它与主机之间以串行方式进行数据传送
C.
目前有无线鼠标器，但没有无线键盘
D.
键盘和鼠标器一样，通过接口输入到主机中的都是二进制信息
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