数据选择器在实现逻辑函数中的应用研究

Application of Data Selector in Combinational Logic Functions

以数据选择器74151为例研究了数据选择器在实现组合逻辑电路中的公式比较法和复合真值表法两种方法。复合真值表法直观且简明地表示出逻辑函数、数据选择器的输入与输出关系,可以方便地确定数据选择器数据端的取值,用于实现各种组合逻辑函数。

This paper takes the data selector 74151 as an example,and systematically studies the two methods of the data selector in the combination logic circuit:formula comparison method and compound truth table method.The compound truth table method intuitively and concisely represents the input and output relations of the logical function and data selector,and can conveniently determine the value of the data end of the data selector,which can be used to realize various combined logic functions.