• BS 5478-1:1977

BS 5478-1:1977

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

BSI Group , 05/31/1977

Publisher: BS

File Format: PDF

$46.00$93.98


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

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