摘要
本文利用集成电路Ｗ７８１２、Ｗ７９１２、Ｗ１１７、Ｗ１３７、μＡ７４１和三极管、二极管、稳压管等元器件。
This paper presents the research and development on analogue electronic technique learning device by means of integrated circuits,such as W7812,W7912,W117,W137,and semiconductor transistors, diodes, zener diodes and so on
