Importance

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Abstract

In an input system, an arithmetic device includes a judgment unit that judges whether a pointing stick is electrically connected, the arithmetic device transmits, to a control unit, identification information indicating that the pointing stick does not exist if the pointing stick is not connected to the arithmetic device, the arithmetic device transmits, to the control unit, identification information indicating that the pointing stick exists if the pointing stick is connected to the arithmetic device, the control unit operates in a first mode in which control is performed based only on a first coordinate if the identification information indicating that the pointing stick does not exist is received, and the control unit operates in a second mode in which control corresponding to each of the first coordinate and a second coordinate is performed if the identification information indicating that the pointing stick exists is received.

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First Claim