前言电气开关无论是过去 ,现在或者是将来 ,在社会生产实践和日常生活中都具有重要的实际意义。随着科学技术的飞速发展 ,对电气开关也提出了新的、更高的要求。电气开关必须在传统电气开关的基础上 ,引入电力、电子、计算机技术发展的最新技术、发展为现代电气开关。逻辑门电? Preface Electrical switches, whether past, present or future, have important practical implications in both social production practices and daily life. With the rapid development of science and technology, new and higher requirements have also been put forward on electrical switches. Electrical switches must be based on the traditional electrical switches, the introduction of power, electronics, computer technology, the development of the latest technology, the development of modern electrical switches. Logic gatekeeper?