Patent ID: 7315906

Claim:
An integrated circuit device comprising: a first terminal portion to which one of a first external device and a second external device is selectively connectable; a second terminal portion to which a third external device is selectively; a third terminal portion to which an image forming device is connectable; an operation mode setting device that sets either a first operation mode or a second operation mode; and a processing device that controls the first terminal portion, the second terminal portion and the third terminal portion, and further controls data transmission/reception via each of the first terminal portion, the second terminal portion and the third terminal portion, wherein when the second external device is connected to the first terminal portion, the first operation mode is set by the operation mode setting device wherein the processing device controls the image forming device connected to the third terminal portion to form images based on data supplied from the second external device, and when the third external device is connected to the second terminal portion, the second operation mode is set by the operation mode setting device wherein the processing device controls the first terminal portion to perform transmission/reception of first data to and from the third external device.