The Maria Foundation "AAC Communication 50+" is a communication application software designed by language therapists and programmers to communicate with beginners or moderate to severe communication impaired people. Through the preset common core vocabulary and freely set other vocabulary, 80% communication function can be achieved in the auxiliary demonstration and situational demonstration of communication partners. main features 1. Built-in common core vocabulary, ready to use without complicated settings 2. According to individual needs, you can change the number of grids presented at will. 3. You can add custom vocabulary, and do text, image settings, and recording and web links. 4. Can build your own user database 5. Training workshops are held irregularly, and buyers can participate free of charge.