A target memory cell of a memory device is programmed by applying a programming voltage to a word line that includes the target memory cell, determining whether the target memory cell is programmed, and increasing the programming voltage by a step voltage if it is determined that the target memory cell is not programmed. A media IM client #1 logs in to a media IM server 14 and executes a speed measurement process with a measurement server 200 to determine its uplink speed and downlink speed. The waste receptacle has a discharge port through which waste material stored within said waste receptacle may be discharged for emptying said waste receptacle.