AAC devices, or Augmentative and Alternative Communication devices, are tools that help individuals with speech or language difficulties communicate more effectively. These devices can range from simple picture boards to sophisticated electronic systems that generate speech. They are designed to support people who may have conditions such as autism, cerebral palsy, or stroke that affect their ability to speak. There are two main types of AAC devices: low-tech and high-tech. Low-tech devices include items like communication boards with symbols or pictures, while high-tech devices often use software and touch screens to produce speech. Both types aim to enhance communication and improve the quality of life for users.