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An evaluation of miniaturized aircraft keyboards

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3 Author(s)
K. Butkus ; Dayton Univ., OH, USA ; E. Hughes ; W. Moroney

A study was conducted to examine the accuracy of the keyboard requirements of MIL-STD-1472D and to assess the consequences of operating an aircraft keyboard which was reduced in size to values below the requirements of the military standard. Four keyboard configurations were examined: key size and separation within MIL-STD-1427D requirements: key size and separation within the requirements, with key barriers; key separation below the requirements; and key separation below the requirements, with key barriers. The barrier design was proposed as a technique for reducing the probability of inadvertent key activation, especially for the smaller keyboard configuration. The experiment was conducted in two phases. Phase 1 consisted of keyboard training, and examined data entry (keying speed and accuracy) in a ground environment. Phase 2 examined both the extent of keyboard entry degradation during a simulated flying task, and the consequences of increasing flying task workload on keying performance. High levels of accuracy (>96%) were attained for all keyboards. Under the simulated flying task, increased error rates were obtained with the close-separation keyboards. Under the simulated flying task, error rates were slightly higher than under the training condition when the barrier was used. Barriers increase entry time without reducing errors

Published in:

Aerospace and Electronics Conference, 1992. NAECON 1992., Proceedings of the IEEE 1992 National

Date of Conference:

18-22 May 1992