内含奇力的VAS1261原理图，数据手册，LED照明解决方案，20000:1的调光比及计算表格-Containing kellet VAS1261 schematic diagram, data manual, LED lighting solutions, 20000:1 dimming ratio calculation form

用八块LED显示屏显示从0时0分0秒到23时59分59秒的变化来计时(Timing with eight LED screens showing changes from 00:00:00 to 23:59:59)