A wide variety of technical aids is available to improve the functioning of children with CP. These include eletromechanical toys that employ the concept of biofeedback and operate from a head unit. The toy is manipulated only when the head and trunk are in correct alignment. Eye-head coordination can also be enhanced by computerized toys and games. Microcomputers combined with voice synthesizers help children with speech difficulties to “speak.” These and other device print message onto screen monitors and paper.