The TYY is an electronic device for deaf communications. It is used by the hard of hearing, deaf community and by people with speech difficulties. The TYY is a device that displays typed text. The text is transmitted live by a telephone line. The device is as small as a laptop computer. It has a small screen, that is long, but not wide. It is also connected to a small printer for making transcripts of the conversation. Today the TYY device is mainly used by the deaf to make phone calls to the hearing. Before the explosion of text messaging and Internet video chats, the TYY was the main communication device used by deaf people to speak to other deaf people and the hearing. The TYY device can be used in schools that have a large deaf and hearing population. Schools would need this type of telephone to receive calls from deaf parents and children. the TYY could also be used by the school to contact deaf individuals.
Tags: http://deafness.about.com/cs/ttysandtdds/a/ttyhistory.htm
