JOURNAL OF THE ILLUMINATING ENGINEERING INSTITUTE OF JAPAN
Online ISSN : 1349-838X
Print ISSN : 0019-2341
ISSN-L : 0019-2341
Visibility depend on the visual directions on numerical display devices with positive type 7 segments liquid crystal
Tetsuya Muraoka, Mikiya Kawamura, Hiroe Uesako
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1985 Volume 69 Issue Appendix Pages 91-92

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