An analog storage flash memory by which sufficient write accuracy can be obtained even when the write speed of the memory cell transistor disperses due to manufacturing dispersion or other reasons. The housing tube may include a first housing tube portion having a first stiffness and a second housing tube portion having a second stiffness. In another embodiment, a method of selecting a destination telephone is disclosed that includes detecting a location of a mobile telephone within a wireless detection area provided by a wireless beacon, and sending a call forwarding message to a wide area switch having a communication path targeted to the mobile telephone. The LED modules may be interconnected with one or more plug-in back panel modules attached to a housing and to power and control buses.