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Lightspot-operated typewriter for severely disabled patients

✍ Scribed by M. Soede; H. G. Stassen

Book ID
112758601
Publisher
Springer
Year
1973
Tongue
English
Weight
643 KB
Volume
11
Category
Article
ISSN
1741-0444

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Light-spot-operated typewriter for sever
Light-spot-operated typewriter for severely disabled patients
πŸ“‚ Article πŸ“… 1973 πŸ› Elsevier Science 🌐 English βš– 144 KB

## International graphical symbols standard General principles for the formulation of graphical symbols is the subject of a document recently issued by the International Electrotechnical Commission. IEC Publication 416 establishes uniform principles for the formulation of graphical symbols, their