GB/T 9310-1988
AbolishedAdding machines and calculating machines--Numeric section of ten-key keyboards
加法器和计算器 十键键盘的数字区
Application Summary AI generated
This standard specifies the layout and key arrangement for the numeric section of ten-key keyboards used on adding machines and calculating machines. It is applied in the design and manufacturing of desktop calculators and early electronic adding machines to ensure user consistency and operational efficiency. The standard primarily guides hardware engineers and product designers in China's office equipment industry.
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Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.