5 Comparative Studies of the Legibility of Light Emitting Numerals
In-depth analysis of Hannelore Radi-Koethe and Ernst Schubert of different readout systems of light emitting numerals. Parameter legibility thresholds are discussed with many other technical problems.
Hannelore RadiKoethe and Ernst Schubert

12 Exhibits Preview SID Symposium & Exposition

14 SID 1972 International Symposium and Exposition

19 The Future of Information Displays
A fascinating technological forecast of Information Display usage and application with discussion on forecasting purposes.
C. Machover

21 Huntsville Community Series

Features and Departments

4 Message from the President of SID

30 New Products

32 SID Activities

34 SID Sustaining Members

34 Advertisers