The final report describes the Trine Project which addressed three needs in the education of handicapped children: the need for an alternate writing system, the need for communication, and the need for access to general purpose computers used in the schools. The project had three major objectives: (1) to design a low-cost portable writing and computer access aid using existing technology, (2) to provide alternative communication integrated with writing and computer access; and (3) to provide a tutorial manual that allows naive users to learn the system. The project resulted in a special computer program which turns the Epson HX-20 general purpose computer into a dedicated writing, conversation, and computer access aid with a structured tutorial manual. Results of field testing with 13 users and 6 consultants indicated that the Trine System can be learned effectively from the guidebook and that it can meet basic communication and writing needs of persons in educational settings. A nonexclusive marketing plan (in which a limited number of organizations have the right to produce and sell the system) was used and the Trine System is now available through two commercial companies. Among appendixes are product brochures, a conference paper on the design and testing of a tutorial manual, several questionnaires on system use and evaluation, and a manual critique. (Author/DB)