Part 2

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Created by
Mark Ely

Cards (13)

  • KEYBOARD
    Most common text input device • Allows rapid entry of text by experienced users • Keypress closes connection, causing a character code to be sent • Usually connected by cable, but can be wireless
  • QWERTY - standardized layout
  • ALPHABETIC - keys arranged in alphabetic order. Not faster both for trained and beginner typists.
  • DVORAK - common letters under dominant fingers and biased towards right hand
  • SINGLE HANDED KEYBOARDS designed for one handed use and designed to reduce fatigue for RSI.
  • CHORD KEYBOARD only a few keys - four or 5 and letters typed as combination of keypresses
  • PHONE PAD AND T9 ENTRY use numeric keys with multiple presses.
  • HANDWRITING RECOGNITION Text can be input into the computer, using a pen and a
  • SPEECH RECOGNITION Improving rapidly • Most successful when: o single user – initial training and learns peculiarities o limited vocabulary systems
  • NUMERIC KEYPADS for entering numbers quickly: o calculator, PC keyboard • for telephones not the same!! ATM like phone
  • Mechanical Mouse - Ball on underside of mouse turns as mouse is moved and can be used on almost any flat surface
  • Optical Mouse - light emitting diode on underside of mouse and may use special grid-like pad or just on desk
  • THE MOUSE Handheld pointing device o very common o easy to use
    • Two characteristics
    o planar movement
    o Buttons