Abstract
This study investigated the effects of several alphanumeric keyboard characteristics including: audible feedback; location, size, and shape of the carriage return key; and the shape and style of keycaps. Four of the six keyboards were experimental prototypes, while the remaining two were production models.
Eighteen subjects were used in a mixed factorial design. Subjects performed a text entry task during which they were not allowed to correct any errors. Four types of data were collected: 1) total errors per trial, 2) total time for text entry, 3) individual preference questionnaire data for each keyboard, and 4) comparative questionnaire data across keyboards. Results indicate that time on task was not significantly different among keyboards; however, with audible feedback, a marginally significant result was found. Highly trained typists committed significantly more errors than did the other two less experienced groups. Subjects indicated that the location, size, and shape of the return key were important factors for keyboard design. Across groups, subjects preferred the capability for audible feedback.
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