Usability of a one-hand ternary chord keyboard

✍ Scribed by Mark L. McMulkin; Karl H.E. Kroemer

• Publisher: Elsevier Science
• Year: 1994
• Tongue: English
• Weight: 940 KB
• Volume: 25
• Category: Article
• ISSN: 0003-6870
• DOI: 10.1016/0003-6870(94)90016-7

✦ Synopsis

Five subjects learned to operate a one-hand ternary chord keyboard with 18 different characters, on average, in just over 30 min. Subjects practised inputting numeric-type text for an additional 60 h and attained an average peak keying speed of 170 characters/rain. Because of the short learning time, high performance, and low space requirement, the one-hand ternary chord keyboard is an attractive input device for tasks with small character sets.