BS 5478-1:1977被替代
Specification for calculators and adding machines. Numeric section of ten-key keyboards for calculators and adding machines
出版：British Standards Institution
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基本信息
标准编号： BS 5478-1:1977
发布时间：1977/5/31 0:00:00
标准类别：Standard
出版单位：British Standards Institution
标准页数：0
标准简介
Composition and layout, shape of keys, slope of keyboard plane, maximum key stroke, spacing of keys.
标准备注
© British Standards Institution 2013
Replaced by notes:
Replaced by Parts 1 to 8 of BS ISO/IEC 9995.
替代本标准的新标准
等同采用的国际标准
ISO 1092:1974 - Identical
