Device for controlling a computer system

The invention relates to is a plurality of a set of users wireless contact mouse the fixed-point device (3) control computer system (1) and system, in particular personal computer. Each fixed-point device infrared with A connection Automatic (1) control table (38) for communication via a communication port (50) is. With the multi-frequency transmission technology of frequency jumping coding method. A system for interface projects (47,48) is a large screen, for collective watch capable the demonstration. The receiver angle of the control table (38) comprises a adopts to a receiving range, a separating (41) and a set of one or multiple different and/or different colours cursor (54) is switch (40) is a control apparatus. The invention device is particularly for designs the collective initial a computer and collective training using software.