开关的通断对应着1和0info::操作说明鼠标单击开关切换开合状态primary::在线交互操作链接https://cc.xiaogd.net/?startCircuitLink=https://book.xiaogd.net/cyjsjdmw-examples/assets/circuit/cyjsjdmw-ch02-01-represent-number-by-switch.txt原图通过使用多