A computer terminal user interface control is provided for allowing input from an operators non-dominant hand. Force sensitive transducers are provided at right angles to one another. Forces applied to these transducers move a tool set to various sub-portions of a video display device. The user's dominant hand is then free to select from various sub-areas of the tool window positioned by the non-dominant hand in a simple and efficient manner.
A method and system for controlling a display of a data processing system uses first and second wireless position control devices, and a control base unit. The first wireless position control device includes a transducer for transmitting a first signal upon which X-Y position control and/or action control signals generated by the device are imposed. A second wireless position control device includes a transducer for transmitting a second signal upon which X-Y position control and/or other action control signals generated by the second control device are imposed. The first and second signals and second different frequencies. To prevent the control devices from interfering with each other, the control base is associated with the data processing system and includes circuitry for issuing polling signals to the control devices. Only one of the control devices is polled at a particular time. The control base circuitry also receives and decodes the carrier signals to generate decoded display control signals. The display control signals are then used to drive the display device. Two users may thus control the display device simultaneously.
