Legibility of Numerals Displayed in a 4 x 7 Dot Matrix and Seven-Segment Digits

Abstract

Conventional and especially designed numerals in 4 x 7 dot matrices and 7-segment displays were tachistoscopically presented to, and identified by, human observers. The number of errors made in this identification task were analyzed as a measure of legibility in terms of information transmission. It is shown that the representation of digits in such matrices can be improved by appropriate design.