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DIN ETS 300640:1997-04
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DIN ETS 300640:1997-04
Human Factors (HF) - Assignment of alphabetic letters to digits on standard telephone keypad arrays; English version ETS 300640:1996More info
The document defines the assignment of alphabetic letters to digits on telephone keypad arrays.
| Author | DIN |
|---|---|
| Editor | DIN |
| Document type | Standard |
| Format | File |
| ICS | 33.050.10 : Telephone equipment
|
| Number of pages | 12 |
| Cross references | ETS 300640 (1996-08), IDT |
| Year | 1990 |
| Document history | |
| Country | Germany |
| Keyword | 300640 |