A parallel processor and an image processing system incorporating such processor are disclosed. A voltage regulating circuit, a P channel MOS electric field effect transistor, a PMOST, and an N channel MOS electric field effect transistor are connected in series between 2 power sources. A storing unit prestores a vehicle image and history data, which include the image information associated with the position information. The cutting block is floated on the bone using the navigation system to position it at correct locations for the bone resection. 4 second and less than or equal to 1 second, according to the constrained format. To dump the scraps, the locking device is unlocked and the bottom board is rotated with respect to the lower end opening to be opened.