QBTL is designed specially for use as a four-valued thresholdgate with which varied four-valued composite logic circuits can be formed.
其中QBTL设计成可单独作为四值“阀”门使用，用于构成其他四值组合逻辑。
2
A new three-valued logic (TVL) thresholdgate circuit simple in structure and suitable for IC manufacturing is described. A three-valued t gate IC for multiple purposes is designed.
本文介绍了一种结构简单、适于集成化的三值“阈”门电路，并设计了一个多功能三值T门集成电路。
3
I love better than any theory the sound of the Gate of Ivory, turning upon its hinges, and hold that he alone who has passed the rose-strewn threshold can catch the far glimmer of the Gate of Horn.