16. The device of claim 12 , wherein the first plurality of user selectable keys are each labeled with a core word.
12. A device for providing an augmentative and alternative communication (AAC) language system, the device comprising: a processor; a touch-sensitive display operably connected to the processor; and a computer readable medium operably connected to the processor, the computer readable medium containing a set of instructions configured to instruct the processor to perform the following: display a home screen on the touch-sensitive display, the home screen comprising a first plurality of user selectable communication keys, wherein each communication key represents a first word, receive, from the touch-sensitive display, a first indication of a user selection of a first key selected from the first plurality of user selectable communication keys, wherein the first key is located in a first position on the display, in response to receiving the first indication, determine whether the first key is linked to a secondary screen, if the first key is not linked to a secondary screen, output an audible signal representing the first word, and if the first key is linked to a secondary screen, display the secondary screen on the touch-sensitive display, the secondary screen comprising a second plurality of communication keys that are related to the first word, wherein: displaying the secondary screen comprises displaying the second plurality of communication keys that are related to the first word so that the second plurality of communication keys comprise words that are semantically related to the first word as different tenses, conjugations or forms of the first word, and displaying the second plurality of communication keys also comprises displaying the words that are semantically related to the first word on keys that are adjacent to the key containing the first word; wherein the AAC language system is configured so that each key of the secondary screen is configured to output an audible output signal corresponding to a word associated with the key of the secondary screen and the AAC language system will therefore audibly output each user selected word after no more than two user selections.