A Comparative Study of Single-Versus Double-Sequence Data-Entry Methods for Use with the SB-3614/TT Switchboard.

摘要

Three methods of programming trunk-terminal assignments into the electrically alterable non-volatile memory (EVANVM) of the SB-3614/TT switchboard were compared. One was the double-sequence method recently proposed by the SB-3614/TT contractor (GTE Sylvania, Needham Heights, MA). The other two were single-sequence methods developed by the authors. The two single-sequence methods used identical data entry procedures; but with one, visual feedback was supplied to the test subjects (Ss) as an alphanumeric display. Results of this study showed that both single-sequence method were superior to the double-sequence method, in the Ss could program faster and made fewer errors. Of the two single-sequence methods, the one employing visual feedback enhanced Ss performance, but, overall, this enhancement was not statistically significant.