An image forming apparatus capable of solving problems in error diffusion method is provided. The housing includes a deflectable latch for latching with a mating electrical connector. The cable is positioned for guided movement within the conduit. The wrapping sheet may be made of leather like the upper so that the shoe can present a harmonious and elegant appearance. Based on this, optimum speaker locationsfrequency assignationsspeaker parameters may be determined and output. The control program undertakes the control of a tuning process between the radio nodes and selects one of the radio nodes for the processing of one of the predetermined tasks, the selected node at that instant being best suited for the task according to predetermined criteria.