Communication aids help people to communicate with people around them in various ways. They use different levels of technology to produce communication. In the simplest form this can be the use of photos, pictures and symbols which can be placed in books or charts and pointed to by the user. These are usually referred to as no-tech aids because they are non-electronic
Mid-tech aids require an element of user set-up and can often be text-based, where the user has a keyboard to type messages which are then turned into voice output, or a device that has more than one 'level' of options per button. High tech aids are sophisticated pieces of technology incorporating such elements as touch screen usage. These devices can be extensively programmed to grow and develop with users changing needs.
types etc and a link to the Library Catalogue download