总线规范会详细描述总线各方面的特性，其中（ ）特性规定了总线的线数，以及总线的插头、插座的形状、尺寸和信号线的排列方式等要素。总线带宽定义为总线的最大数据传输速率，即每秒传输的字节数。假设某系统总线在一个总周期中并行传输4B信息，一个总线周期占用2个时钟周期，总线时钟频率为10MHz，则总线带宽为（ ）Mbps。
问题1选项
A.物理
B.电气
C.功能
D.时间
问题2选项
A.20
B.40
C.60
D.80
正确答案及解析
正确答案
解析
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