A multidirectional control system with shear feedback, comprising at least one stationary body, a plurality of tactors disposed within the at least one movable body or the at least one stationary body. The developer-driving device includes a photosensitive drum-driving unit that rotates a photosensitive drum and a developing roller-driving unit that rotates a developing roller. A display screen in data-communication with the microprocessor presents information for user observation based upon data output from the microprocessor. The acquisition engine, coupled to the correlation circuit, determines reception power of the GPS satellite signal. The effective separation length is thus decreased to 10 cm or less to attain high throughput.