Keyboard arrangement to maximize one-handed typing speed and training for engineering and architectural computer assisted drawing and design or disabled typists

A keyboard arranged for efficiency in learning and in operating. The keyboard arrangement that has the distinct advantage of maximizing the speed and efficiency for either fight one-handed or left one-handed typing while allowing for a smooth and easy transition from the QWERTY keyboard arrangement to the keyboard arrangement A keyboard that increases speed of training of one-handed or two-handed operators by color matching the keys to be reached by a specific finger. A keyboard to allow disabled, arthritic, and/or limited hand use typists, e.g., the disabled with limited finger movement, to increase their speed and use of the computer keyboard, and to reduce body, head, neck, eye, and sensory stress. Hoe keys are assigned according to the frequency of use of the letters. A user can select a new format with thirteen or more keys in the same location as the conventional typewriter letter format The keyboard is suitable for typewriters, personal computer keyboards. Different keyboards can be selected according to the frequency of use of the letters. By maintaining the same locations, most of the difficulty in relearning a new keyboard layout can be eliminated.