介绍了在电子设计中画线路板是应该注意的,特别是底线和电源的设计-Introduced in the electronic circuit board design, painting should be noted, in particular, is the bottom line and power supply design

led屏控全彩制卡通用接口HUB47线路板图文件，protel99格式，这个图谁都能画出来就是需要点时间，送给需要用的人下载。 -Led full-color control card common interface HUB47 PCB figure file, protel99 format