Hardware

Hardware

1. Computer hardware for disabled people

   • Eye-typer: These detect eye movement and blinking to input data
   • Puff-suck switch: These allow the user to operate switches by sucking blowing into a tube
   • Joystick: A joystick requires less physical movement than a mouse, so is an effective replacement for the mouse
   • Braille keyboard: For those with visual impairment. This is a specialist keyboard with raised patterns on the keys that match standard braille characters
   • Foot mouse: For those who have limited hand / arm movement a tracker-ball type of device operated with the foot.

2. Definition of an input device: An input device is a piece of hardware that is used to enter data into a computer.

   • Examples: Keyboard, microphone, mouse

3. Definition of an output device: A piece of hardware that allows the computer to output data

   • Examples:Monitor, speakers, printer

4. Definition of secondary storage: Secondary storage is non-volatile disk space, and is sometimes called auxiliary memory, secondary memory or external memory. Storage devices, like an external hard drive are used to store files like photos, program files and any other information that needs to kept long term.

   • Types of secondary storage: Optical disk, solid state and Magnetic hard drive