Input devices

Input devices

1. Keyboard

   • Text appears as you type, so it's easy check for accuracy
   • They are good for programs that require you to write
   • It's a slow method for entering large amount of text, compare to scanning or dictating
   • Typing for long time can cause painful condition called repetitive strain injury

2. Joystick

   • They are ideal for quick movement
   • They can by used by disabled people because they can be operated be foot mouth and etc.
   • Entering is slow because you have to select individual letters
   • You have to purchase them separately from computer system

3. Touch screen

   • They are very simple to use
   • They are ideal where space is limited such as on smart phones, PDA and ETC.
   • The screen can get dirty
   • On small screen the icons are really hard to select

4. Remote controll

   • Can control devices safely from distance
   • Enables people with disabilities to operate devices at a distance
   • Remote control usually uses infra red signals and these signals can be blocked by objects in their pat so the remote might not operate
   • Remote controls need batteries to operate and need constant replacement