Definition: A compounder is a type of device that is designed to help individuals who have difficulty with reading and writing. These devices are typically used for people with visual impairments or other types of disabilities, such as dyslexia or ADHD. The purpose of a compounder is to assist in the process of reading and writing by providing tactile feedback to the user's eyes. This can include features like highlighting, underline, or even voice commands that enable users to focus on specific words or phrases. Compounders