AN ONLINE CONTROL OF BRAIN-COMPUTER INTERFACE SYSTEM USING LABVIEW GRAPHICAL PROGRAMMING CAN BE EASILY INTERFACED TO EXTERNAL HARDWARE VIA USB6009 USING USB PORT. A PROGRAM TO DECIDE THE CORRECT OUTPUT FOR THE COMMUNICATION AND CONTROL SYSTEM IS IMPLEMENTED SINCE TWO TRAINED SVM MODELS ARE USED TO CLASSIFY THREE MENTAL TASKS PRAY, MULTIPLY AND ROTATE. A NEW PROTOTYPE OF MOTOR CIRCUIT FOR WHEELCHAIR THAT CAN BE CONTROLLED BY EEG MENTAL TASKS IN LABVIEW PROGRAMMING USING USB PORT IS DESIGNED, DEVELOPED AND TESTED. THE MOTOR CAN BE INSTRUCTED TO PERFORM THREE MOVEMENTS FORWARD, REVERSE AND STOP.