本文是J.P.BUNT 1960年在英国数字計算机系統可靠性与维护討論会上的讲話稿。文中介紹了作者在电子管与晶体管計算机中使用边缘試驗技术的經驗,并提出了他对校驗技术与多余技术对改进可靠性作用的看法。虽然作者在写作該文时經驗还不夠丰富,数据材料也还不多,但提出的一些方法与观点对关心計算机可靠性,特别是边缘試驗技术的讀者是有一定的参考价值的。 This article is J.P.BUNT 1960 speech in the United Kingdom digital computer system reliability and maintenance seminar. The paper introduces the author’s experience of using edge test in tube and transistor computer, and puts forward his opinion on the effect of check technology and redundant technology on improving reliability. Although the author’s experience in writing this article is not rich enough and there is not much data available, some of the methods and opinions put forward are of some reference value to those who care about computer reliability, especially the edge test technology.