每当夜幕降临，楼宇上、道路旁缤纷夺目的霓虹灯广告，构筑了一道璀灿的城市夜景，作为主角 —— 霓虹灯功不可没，而可编程序控制器是专用于工业控制的工业计算机，是现代化工业的三大支柱之一。-As night falls, building on the road, colorful neon signs advertising, has built a resplendent city at night, as a leading role--helped neon lights, and progr