本帖最后由 左哥 于 2014-4-4 14:43 编辑
建议楼主恶补相关理论知识
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usafn6132 发表于 2014-4-4 12:51
请问三极管不是基极高电平是工作吗?lm3914不是平时常输出高电平,工作是输出低电平吗,我按您的说法改了 ...
建议楼主恶补相关理论知识
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX?
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX?