四、数字比较器及校验电路(一)数字比较器在逻辑系统中常常要对数字进行比较。有两类比较器,一类是“等值”比较器,它只检验两数是否相等;另一类是“量值”比较器,它不但检验两数是否相等,而且还检验两个数的大小。从对数码进行比较的方式来分,又分串行比较器和并行比较器两种。集成化数字比较器主要是并行量值比较器。检验数码Ai、Bi大小的方法很多,其中的一个方法是: Fourth, digital comparator and calibration circuit (A) digital comparator In the logic system often have to compare the figures. There are two types of comparators, one is the “equivalent” comparator, which only checks whether the two numbers are equal; the other is a “magnitude” comparator, which not only checks whether two numbers are equal but also checks two numbers size. From the way to compare digital points, divided into serial comparator and parallel comparator two. Integrated digital comparator is mainly parallel value comparator. There are many ways to check the digital Ai, Bi size, one of which is: