. Author manuscript; available in PMC: 2014 Sep 1.

Published in final edited form as: Comput Speech Lang. 2012 Oct 23;27(6):10.1016/j.csl.2012.10.006. doi: 10.1016/j.csl.2012.10.006

Table 4.

Text entry results for 13 users on 5 test strings (total 31words, 145 characters) under five conditions, with fixed 600-ms scan rate for the two synchronous conditions.

Scanning condition		Speed (cpm) mean (std)	Bits per character		Error rate mean (std)	Long code rate mean (std)
Scanning condition		Speed (cpm) mean (std)	mean (std)	opt.	Error rate mean (std)	Long code rate mean (std)
Row/column auto scan		15.3 (1.2)	6.4 (0.5)	5.6	2.9 (2.3)	6.4 (4.0)
Synchronous Huffman		25.0 (4.2)	3.4 (0.8)	2.6	2.2 (1.9)	8.6 (7.3)
Asynchronous	no reset	21.3 (3.3)	2.8 (0.2)	2.4	4.8 (2.3)	0.0 (0.0)
	final dot	22.2 (3.2)	2.9 (0.2)	2.5	2.7 (1.7)	1.6 (1.3)
	recalc@5	19.4 (3.4)	3.1 (0.3)	2.5	3.4 (2.1)	5.3 (1.3)