1947年12月16日，美国贝尔实验室的巴丁、肖克莱和布拉顿宣布，他们研制成功了世界上第一只晶体管。不过，当时他们所发明的点接触式晶体管很难说有什么实用价值，其高频性能很差，制造工艺也存在着许多问题。因而，即使是那些看好晶体管前景的工程师、企业家们也不得不承认，? December 16, 1947, the United States Bell Labs, Budinger, Shockley and Bratton announced that they successfully developed the world’s first transistor. However, when they invented the point contact transistor hard to say what is the practical value, the high-frequency performance is poor, the manufacturing process there are many problems. Thus, even those engineers optimistic about the prospects of transistors, entrepreneurs have to admit that?