input and output devices

input and output devices

1. input

   • mouse
     • advantages
       • fast way to choose an option
     • disadvantages
       • difficult to use if no flat survace ir readily aviable
   • keyboard
     • advantage
       • fast entry of new text into document
     • disadvantages
       • fairly large device that uses up valuable desk space
   • touch pad
     • disadvantages
       • can fail
     • advantages
       • easy and quickly to use

2. output

   • crt monitors
     • advantages
       • the angle of viewing is very good
     • disadvantages
       • can turn very hot
   • tft monitors
     • advantages
       • produce less radiation than crt
     • disadvantages
       • not good angle of view
   • multimedia proyector
     • advantages
       • enable many people to see a presentation
     • disadvantages