洞洞板电路上周围用锡直接焊成一条线可直接表示为Gnd或V CC吗？而不用连接电源

Question

①在洞洞板的最上面和最下面，分别用锡连成一条线，可分别表示为VCc和gnd吗？而不用连接电源
②在洞洞板上这种开关怎样连接？用分正负极吗？（图片在下方）

Answer 1

开关只有开和关两种状态，不分正负，可参考https://blog.csdn.net/songbo1010/article/details/128363442?ops_request_misc=%257B%2522request%255Fid%2522%253A%2522170104706716800184158034%2522%252C%2522scm%2522%253A%252220140713.130102334..%2522%257D&request_id=170104706716800184158034&biz_id=0&utm_medium=distribute.pc_search_result.none-task-blog-2~all~sobaiduend~default-2-128363442-null-null.142^v96^pc_search_result_base7&utm_term=%E5%9F%BA%E4%BA%8E51%E5%8D%95%E7%89%87%E6%9C%BA%E6%8C%89%E9%94%AE%E9%87%87%E9%9B%86&spm=1018.2226.3001.4187