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. Communication is one of the foundations of interpersonal relationships and is fundamental to human development and expression. However, there are today in Brazil, about 9.7 million disabled people who have limitations in their oral communication or writing. “Extended Alternative Communication” (CAA) is the term used to refer to assistive technologies and procedures, which are intended to assist individuals with communication disorders. Objective. The purpose of this article is to make a bibliographic survey of the main systems used in CAA, focusing on the analysis of its visual programming and the methods applied to its development. Method. Therefore, we conducted surveys on scientific articles that bring recent experiences and the results of these practices to the target audience. Results. We can analyze the three AAC systems: Blissymbolics (Bliss), Pictogram Ideogram Communication (PIC) and Picture Communication Symbols (PCS), regarding the chromaticity and abstraction of the developed images (iconic and symbolic) and seeking subsidies for the development of similar ones.

Design Centrado no Usuário: Análise de Sistemas de Apoio para Comunicação Alternativa