ETR 345 : 20001
Current
The latest, up-to-date edition.
HUMAN FACTORS (HF) - CHARACTERISTICS OF TELEPHONE KEYPADS AND KEYBOARDS - REQUIREMENTS OF ELDERLY AND DISABLED PEOPLE
Hardcopy , PDF
English
Foreword
Introduction
1 Scope
2 References
3 Definitions, symbols and abbreviations
3.1 Definitions
3.2 Symbols
3.3 Abbreviations
4 Recommendations for the characteristics of telephone keypads
and keyboards
4.1 Keypad layout
4.2 Size of keys
4.3 The space between each key
4.4 Separation of key groups
4.5 Shape of keys
4.6 Key tops
4.7 Height of characters on the keys
4.8 Contrast between characters and keys
4.9 Contrast between keys and telephone set
4.10 Key material
4.11 Tactile feedback and ease of keying
4.12 Angle of keypad
4.13 Labelling of function keys
4.14 Activation of functions
4.15 Labelling of memory keys
Annex A: Bibliography
History
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