Profile: Zygo Industries, Inc. specializes in manufacturing & distributing augmentative & alternative communication, environmental control systems and alternative computer access. Our product communication systems include text to speech devices, digital recording, dynamic display and communication & literacy development software. Digital recording refers to storing messages created by human voice which are played back by the device user to speak a given message. These devices use static overlays to represent the vocabulary stored on the device. Use symbols, pictures, letters, words, or objects on the overlay to remind the user of the stored message.