Data entry keyboard

DETAILED DESCRIPTION Accordingly, the objectives of this invention are to provide, inter alia, a new and improved one-hand keyboard layout that: is easy to learn; requires minimum finger movement; minimizes redundant keystrokes; allows fast data input; and includes all alphanumeric and functional keys found on a standard computer keyboard.
These objectives are addressed by the structure and use of the inventive one-hand keyboard layout.
A nineteen key keypad, comprising fifteen primary and four secondary keys, is laid out in a manner that maximizes the number of character signals generated from located on a "home" position or by using single keystrokes.
The fifteen primary alphanumeric keys are laid out in three rows with five keys in each row.
The most commonly used letters in the English language are on keys in a primary mode (not requiring the simultaneous striking of one or more secondary function keys).
Further, the most common two-letter combinations (digraphs) are on keys in the primary mode and proximate to one another.
Other objects of the invention will become apparent from time to time throughout the specification hereinafter disclosed.