GB/T 9311-1988
AbolishedAdding machines and calculating machines--Keytop and printed or displayed symbols
加法器和计算器 键顶、打印或显示符号
Application Summary AI generated
This standard specifies the symbols to be used on keytops, printed outputs, and displays for adding machines and calculating machines. It is applied in the design, manufacturing, and labeling of these devices to ensure consistent and recognizable symbols for operators. The standard facilitates user understanding and reduces errors in data entry and reading across different brands and models.
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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.