Standard Validation · SS-ETS 300640

Human Factors (HF) - Assignment of alphabetic letters to digits on standard telephone keypad arrays

Status: Valid

Subjects

Ergonomics


Product information

Language: English

Written by: ITS

International title: Human Factors (HF) - Assignment of alphabetic letters to digits on standard telephone keypad arrays

Article no: STD-19131

Edition: 1

Approved: 9/27/1996

No of pages: 0