โ Scribed by Ellison, Harlan
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
crutch-type armpit support with a rocker foot. This 'rolls' forward under the disabled persons control when the arms support the body weight. A main virtue is that it permits people otherwise confined to a wheel chair to move and meet people at a standing position.
is a small lightweight keyboard which allows simultaneous input of alphanumeric and digitized data. Its size (167mm x 100ram x 15ram) and weight (130g) make it suitable for use with Summagraphics digitizers. The RS232C interfacing (or on special order 20mA current loop) makes the keyboard suitable
Many recent studies of keyboard entry are summarized with particular emphasis on performance data and fundamental questions about the design of keyboards. The role of auditory and visual feedback and physiological measurements are reviewed. Typical speed and error rates are given for several types o