Home / Standards / GB/T 9310-1988 GB/T 9310-1988 Abolished Adding 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 Standard Type GBT ICS 35.180 CCS L63 Status 废止 Issue Date 1988-06-09 Implementation 1988-12-01 Responsible Dept 国家标准委 Drafting Unit N/A