2. Input Tongue Drive System Virtual Keyboard Braille keyboard Output Screen Readers Printer Braille Printers

3. Tongue Drive System Users tongue is used to control the mouse of a computer Braille Keyboards Used by blind people to type on computers as a normal person would

4. Virtual Keyboard Used by physically disabled people with various ability switches

5. Screen Readers Are used by blind people to either hear what is on the monitor or feel it on the keyboard with their hands

6. Braille Printer This printer allows for blind people to use the printer in a similar way a normal person would use it