There is provided a portable information apparatus including an EL display device which can reduce consumed electric power at the time when a still picture is displayed. This circuit builds the map based on the tokens it observes. Kits for performing the assay are also described. The server storage device preferably stores a server program for controlling the server processor. By using the various codes, the correlator is adaptable and flexible for different correlation requirements. The antenna also comprises an assembly of conductive studs which is connected to and extends from at least one element of a group of elements comprising the ground plane and at least one radiator element in such a way that at least one physical dimension of said at least one radiator element for a determined resonance frequency is reduced.