A disposable packaging form is provided for brewed, hot drinks. A first gate electrode surrounds each of the first plurality of semiconductor nanowires, making them gate-all-around semiconductor nanowires. A system management mode is invoked in response to a change in the dynamically selected target value, including suspending a normal operation of the memory system. The blocks are buffered in sequences of 2 or 3. The pattern generator is preferably implemented as a programming module in a memory space and executed by a processor. When the electric power is switched off, an EPG data of a channel which will be lost the earliest is searched among the EPG data stored in the memory, and a time of day when the EPG data of the searched channel is lost is calculated.