鼠标单击开关切换开合状态
系统中使用 半方形+半圆形 表示与门
https://cc.xiaogd.net/?startCircuitLink=https://book.xiaogd.net/cyjsjdmw-examples/assets/circuit/cyjsjdmw-ch05-11-2-inputs-and-gate.txt
原图
https://cc.xiaogd.net/?startCircuitLink=https://book.xiaogd.net/cyjsjdmw-examples/assets/circuit/cyjsjdmw-ch05-12-3-inputs-and-gate.txt