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- 2选1的数据选择器 实现2选1的电路功能,其真值表和电路符号如下图所示。即当s=1时,输出m=y;当s=0时,输出m=x。 -2 Select a data selector circuit to achieve 2 S 1 function, its truth table and circuit symbols shown below. That is, when s = 1, the output m = y when s = 0, the output m = x.