本文介紹用“最坏情况”设計法設計可靠的、多輸入-輸出端的二极管“非或”线路的問题。討論了晶体管参量变化的特点,以及在設計中考虑这些变化时,仍能維持线路可靠工作的問题。用图解法說明了二极管的非线性特性。根据所推导的理論,計算了一个实例,最后介紹了工作于“最坏情况”下的门的最大延时的一种新测量方法。 This article addresses the issue of designing a reliable, multi-input-output diode “NOT OR” line using the “worst case” design approach. Discussed the characteristics of transistor parameters changes, and consider these changes in the design, the problem still can maintain the reliable operation of the line. Graphically illustrates the diode’s nonlinear characteristics. According to the deduced theory, an example is calculated, and finally a new measurement method of the maximum delay of the door working in “worst case” is introduced.