The document discusses several input and output devices that can help people with physical challenges use computers. It describes the Seeing AI, which is a set of smart glasses and mobile app created by Microsoft to help blind people understand their environment by describing things they point their glasses at. It also discusses TTY devices that allow deaf people to type back and forth on the phone instead of talking, eye-controlled mice that let you move a cursor with your eyes using cameras and software, and sip-and-puff devices that let non-verbal people control wheelchairs or other devices using air pressure through a straw.

1. Introduction to Computer Science
Input and Output Devices for Physically Challenged People
Name:
Roll No.
Microsoft Seeing IA by //build/
The Seeing AI is a set of Mobile App and Sun Glasses, which is made by MS Build an organization of
Microsoft working on Artificial Intelligence. This something not public but tested on Microsoft
Developer named Saqib Shaikh. You can find different videos on internet in which Saqib Shaikh is
looking at the environment by his glasses and through his mobile app he can hear what is going /
happening around him like a girl is playing with his Frisbee. Or he can view Menu card of restaurant,
his mobile app scan Menu card and converted text into audio. This is amazing invention; you should
search more about it.
TTY
TTYstands for Text Telephone. It is also sometimes called a TDD or Telecommunication Device for
the Deaf. TTY is the more widely accepted term, however, as TTYs are used by many people, not
just people who are deaf.
A TTY is a special device that lets people who are deaf, hard of hearing, or speech-impaired use the
telephone to communicate, by allowing them to type messages back and forth to one another instead
of talking and listening. A TTY is required at both ends of the conversation in order to communicate.
Eye-Controlled Mouse Movement
British scientists created GT3D, a clever device that gives you the ability to control computers using
your eyes. The high-tech gadget uses special software and cameras attached to glasses that you
wear. After configuring the GT3D and "training" it, you can control your mouse pointer accurately by
simply moving your eyes. Other devices, such as the Tobii PCEye, also give you the ability to position
a mouse cursor anywhere on the screen by fixing your eyes on a specific screen location.
Sip-and-Puff
Sip-and-Puff or Sip 'n' Puff (SNP) is assistive technology used to send signals to a device using air
pressure by "sipping" (inhaling) or "puffing" (exhaling) on a straw, tube or "wand." It is primarily used
by people who do not have the use of their hands. It is commonly used to control a motorized
wheelchair by quadriplegics with very high injury to their spinal cord or people with Amyotrophic
lateral sclerosis (ALS).