OPERATOR PERFORMANCE ON MINIATURIZED DECIMAL-ENTRY KEYSETS.
Abstract
Two different miniature keyset designs were instrumented for the entry of decimal numbers. One of these, designed for probe actuation, could be operated either with a probe attached to the index finger or with a pencil-like probe. The other was designed for touch operation using only the index finger. An experiment was conducted to compare the three methods of operating miniature keysets with operation of a standard-size keyset. There was no significant difference in performance between either of the probe-operated keysets and the standard keyset, but the 'touch' miniature keyset showed a significantly more errors than the standard set. It was concluded that, where space conservation is important, a miniature probe-actuated keyset may be employed without penalty in time or error rate. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 04, 1961
- Accession Number
- AD0622366
Entities
People
- L. E. Hufford
- R. Coburn
Organizations
- Navy Electronics Laboratory