Accession Number:

AD0679528

Title:

LEGIBILITY OF SEGMENTED VERSUS STANDARD NUMERALS: THE INFLUENCE OF THE OBSERVER'S TASK.

Descriptive Note:

Final rept.,

Corporate Author:

AEROSPACE MEDICAL RESEARCH LABS WRIGHT-PATTERSON AFB OHIO

Personal Author(s):

• Gibney,Terrence K.

Report Date:

1968-08-01

Pagination or Media Count:

29.0

Abstract:

In many current visual display techniques, numerals are formed by a pattern of individually illuminated segments. Laboratory research has indicated, generally, that such segmented numerals are not so easy to read as standard Arabic numerals. Research results suggest that in some practical, complex tasks these laboratory differences disappear. In this series complexity of the observers task, and his freedom to control his viewing were systematically varied. As task complexity or allowable viewing time, or both, increased, measured legibility differences between segmented and Arabic numerals tended to disappear. Author

Descriptors:

• *DISPLAY SYSTEMS
• *VISUAL PERCEPTION
• HUMAN FACTORS ENGINEERING
• PERFORMANCE(HUMAN)
• SYMBOLS
• NUMBERS
• ILLUMINATION
• READING
• PERFORMANCE(HUMAN)
• CONTROL SYSTEMS
• FEASIBILITY STUDIES
• TEST METHODS

Subject Categories:

• Human Factors Engineering and Man Machine Systems

Distribution Statement:

APPROVED FOR PUBLIC RELEASE