Tactile graphic-based interactive overlay assembly and computer system for the visually impaired

摘要: A computer-based system permitting a visually impaired user to interact with tactile graphic-based interactive software applications is provided. The includes host computer having data processor and drive for running the pressure sensitive work pad. pad has X Y members disposed in grid array providing unique location output signals corresponding each different on array. operatively connected an overlay comprising sheet placed over upper surface of space which bears indicia corresponds selected one also graphical interface (TGUI) formed thereon. TGUI plurality control generate when pressed. These are communicated processes as directing perform operation. Methods calibrating overlays identifying