MSZ 9214-1979 《穿孔纸带的7比特编码键盘的表述》.pdf

相关资源

GB T 3237-1982 信息处理交换用穿孔纸带的盘心尺寸.pdf

GB T 1990-1980 信息处理交换用穿孔纸带孔的尺寸与位置.pdf

GB T 1991-1980 信息处理交换用七位编码字符集在穿孔纸带上的表示方法.pdf

GB T 3147-1982 信息处理未穿孔纸带.pdf

GB T 3147-2006 信息处理未穿孔纸带.pdf

GB T 3147-2006 信息处理未穿孔纸带.pdf

GB T 3237-1982 信息处理交换用穿孔纸带的盘心尺寸.pdf

GB T 1990-1980 信息处理交换用穿孔纸带孔的尺寸与位置.pdf

GB T 1991-1980 信息处理交换用七位编码字符集在穿孔纸带上的表示方法.pdf

GB T 2830-1981 数据交换用盘式穿孔纸带的一般要求.pdf

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