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BS 5478-1:1977

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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Specification for calculators and adding machines. Numeric section of ten-key keyboards for calculators and adding machines

Available format(s)

Hardcopy , PDF

Superseded date

15-11-1994

Language(s)

English

Published date

31-05-1977

Composition and layout, shape of keys, slope of keyboard plane, maximum key stroke, spacing of keys.

BS 5478-2:1977 Calculators and adding machines Layout of function keys on adding machines
BS 7245:1989 Specification for numeric keyboard for home electronic systems (HES)

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