To deal with the run-down of the battery of a pointing device driven by the battery by constituting a system so that the other pointing device can be used while one pointing device main body is charged.

A setting means for setting the other device to a power supply mode supplying power from a battery and one device to a charging mode charging the battery with respect to a first and second pointing device and a charging means charging a pointing device main body where the charging mode is set are installed. When the battery runs down while the mouse 1 is used in a mouse mode, a user removes a mouse 2 from a mouse holder and places the mouse whose battery runs down on the mouse holder 3. Then, the mouse 2 in a full charged state is operated. Namely, the mouse 2 is used in the mouse mode and the mouse 1 is used in a holder mode.