An inspection system and method that inspects at least two different medications is described. The circuit further includes an input stage coupled to the input node and configured to be clocked to transfer the state data to the latch. The first calculator calculates a target display brightness value of the display panel based on an actual ambient brightness value of the ambient light, a predetermined optimal ambient brightness value of the ambient light, and a predetermined optimal display brightness value of the display panel determined according to the predetermined optimal ambient brightness value.