Input device of computer system and method for operating computer system

An input device comprising:

• a motion sensor for detecting a motion state of the input device in three-dimensional space to output original sensing data;
• a receiver, coupled with a main body terminal of a computer system, for receiving the original sensing data and generating a corresponding predetermined code according to the original sensing data;
• and
• an interface unit for converting the predetermined code to a corresponding object code and sending the object code to the main body terminal of the computer system to make the computer system operate according to the object code.

A computer system comprising:

• an input device determining a motion state of the input device in three-dimensional space to output either original sensing data or a predetermined code;
• and
• a main body terminal coupled with the input device via a transmission interface, the main body terminal including:
• an interface unit receiving either the original sensing data or the predetermined code sent from the input device via the transmission interface to covert the original sensing data or the predetermined code to a corresponding object code to make the computer system operate.