A CPU confirms a receivable channel while sequentially changing channel numbers set to an analog front-end unit and specifies an area in which the receivable channel can be received and an area adjacent thereto by referring a receiving channel table by area and an adjacent area table after confirming the receivable channel. The reduction array includes a partial product matrix, a carry-save sum, and a constant value row. A diversity receiver and demodulator method for receiving and demodulating transmitted modulated signals. The toy megaphone has the ability to activate the sensor such that the toy figure emits the second audio output. When a write driver drives the data line, a control signal is applied to isolate the data line from the sense amplifier. The mobile terminal includes one or more bodies, an input unit performing a key input or a touch input, a display unit displaying a task execution screen and a controller displaying a list of tasks being executed when the mobile terminal is in a preset operation mode set by operating the body or the input unit.