What is a common feature of high-tech AAC devices?

High-tech AAC devices are distinguished by a variety of advanced features, with voice output capability being one of the most significant. This feature allows users to communicate verbally through synthesized speech, which can greatly enhance their ability to interact with others and express themselves. This capability not only aids in personal expression but also helps in social interactions, making communication more natural and intuitive for users.

The inclusion of voice output in high-tech AAC devices typically equips them with software that converts text or symbols selected by the user into spoken language. This can lead to a more engaging and effective communication experience, as it provides a human-like interaction that is often crucial for those relying on these devices.

In contrast, the other options highlight features that are generally associated with either lower-tech AAC solutions or characteristics that would limit the effectiveness of high-tech devices. For instance, limited vocabulary options, heavy reliance on manual inputs, and lack of a screen for user interaction would all create barriers to effective communication, undermining the primary purpose of AAC technology, which is to facilitate seamless and efficient communication for users with speech or language challenges.