By Topic

Rotary Dial and Thumbwheel Devices for Manually Entering Sequential Data

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

1 Author(s)
R. L. Deininger ; Bell Telephone Laboratories, Inc., Holmdel, N.J.

A rotary telephone dial and a device consisting of ten thumbwheel switches in a single array were compared in terms of user speed, accuracy, and preference. Where a completely different telephone number was used during each trail, the thumbwheel device took 20 to 60 percent longer than the rotary dial and was disliked by nine out of ten subjects. In contrast, where the successive trials involved telephone numbers with the same prefix, the thumbwheel device took 40 to 60 percent less time than the rotary dial and was preferred by eight out of ten subjects. Error rates were low and the same on both devices.

Published in:

IEEE Transactions on Human Factors in Electronics  (Volume:HFE-8 ,  Issue: 3 )