简单记为：线与上拉，线或下拉。
线与：
线或：
![F5EI_8I]KI05X8_2IAZNP_S](http://images.cnblogs.com/cnblogs_com/freshair_cnblog/201209/201209141122151398.jpg "F5EI_8I]KI05X8_2IAZNP_S")
线逻辑的缺陷是：不能产生非门。The limitations are the inability to create a NOT gate and the lack of level restoration.
简单记为：线与上拉，线或下拉。
线与：
线或：
线逻辑的缺陷是：不能产生非门。The limitations are the inability to create a NOT gate and the lack of level restoration.