Abstract: An input device is provided in which a variety of IC cards having different functions is receivable. The input device includes a body (21) to be connected by an interconnecting cable (30) to an information processing apparatus (2) and which includes controls (23 to 25) to control the information processing apparatus (2), an IC card receptacle (27) for an IC card (7), formed contiguously to an IC card insertion slot (26) formed at the rear end of the device body (21) and through which the IC card (7) is introduced into the IC card receptacle (27), and a cover member (22) installed pivotably to the device body (21) to open and close an operating surface (21a) of the device body (21).