Tag: billboard

  • Using The LED Display As A Echran Outdoor Billboard

    During per-row scanning, as shown in Figure 3, when row 1 is scanned, column 1 is controlled and LED1 lights up while column 2 is turned off and LED3 does not light up, Cpar1 is discharged through row 1. When switching to row 2, only LED4 should light up while row 2 is driving, but…