LCT Eyegaze Edge User Manual page 13

printed, verbalized through a speech synthesizer, or stored as a file for later retrieval. The Keyboard
program functions as a simple word processor.
All Eyegaze keyboards function as single-stroke keyboards. While a manual keyboard requires
simultaneous keystrokes (e.g., the shift key must be held down while typing a capital letter), the
Eyegaze keyboards have a lock feature built into the "shift", "control" and "alt" keys. Once visually
pressed, these keys stay active and work in conjunction with the next key selection. These locking keys
may be deactivated by visually pressing them a second time.
The Alpha keyboard is a simple, large-key alphabetic keyboard. It has both upper case and lower case
options, as well as a third screen, activated from the AltGr key, with numbers and punctuation. The
Alpha keyboard key dimensions are 1-1/4 inch by 1-1/2 inch.
The Qwerty keyboard has a key layout that is familiar to anyone who has used a standard typewriter or
computer keyboard. Its visual keys are 1-inch square. It also has a third layer of keys that include
various punctuation and editing keys.
Image: Alpha Keyboard
The abcde keyboard has all of the keys found on a full function computer keyboard. Its letter keys are
in alphabetic order clustered around the space key. The keys on both this keyboard and the Frequency
keyboard are 3/4-inch square.
The Frequency keyboard has all of the features of the abcde keyboard. To provide maximum typing
speed, the letter keys are arranged around a centrally located space key, according to the average
frequency of use of each key. The most commonly used letters (e,s,t,a...) are located directly around
the space key, and the least frequently used letters (x,j,q,z...) are located slightly farther away.
Image: Abcde keyboard
Image: Qwerty Keyboard
Image: Frequency keyboard
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