A terminal apparatus and a computer-readable storage medium capable of achieving reduction of power consumption by appropriately controlling lighting of a display unit are provided.A CPU lights or extinguishes a display unit after the end of an interrupt event in accordance with a lighting state (lighting, dim-lighting, being unlighted) of the display unit when the occurrence of the interrupt event is detected. It is therefore possible for the CPU to perform appropriate display control according to the lighting state when an interrupt event occurs.