MULTI-VALUED SPECIFIC VALUE DETERMING CIRCUIT, MULTI-VALUE SPECIFIED VALUE NOT, AND, NAND, OR, NOR, OVER, NOVER, AND/OVER, NAND/OVER, OR/OVER, NOR/OVER, UNDER, NUNDER, AND/UNDER, NAND/UNDER, OR/UNDER, AND NOR/UNDER CIRCUITS

摘要

PROBLEM TO BE SOLVED: To provide various kinds of multi-valued logic circuits, in which each numeric value in multi values corresponds to each potential in a one-to-one relationship.;SOLUTION: In a multi-valued specified value determining circuit, a multi-value number is n, there are n power lines where potential increases, in the order of number from a power line VO to a power line V(n-1), and the potential of a power line Vm in them is determined to be specified potential. It is determined whether potential in the input terminal In corresponds with the specific potential or not, and the potential of the power line Vm is outputted from the output terminal Out, when it is determined that the potential corresponds to the specific potential. If it is determined otherwise, the output terminal Out is opened. For example, a pMOS1 is subjected to source-grounded to the power line V(m+1), an nMOS2 is subjected to source-grounded to the power line V(m-1), both the gates are connected as the input terminal In, the drive section of a bidirectional switching means, consisting of transistors 3-6 and diodes 9-12 as shown in figure, is connected between both drains, a switching section in the bidirectional switching means is connected between the power line Vm and the output terminal Out, and so one, thus configuring the multi-valued specific value determining circuit and achieving the purpose.;COPYRIGHT: (C)2004,JPO