In manual data processing, a card index system in which individual attributes are represented by holes in certain areas of the card. The presence or absence of a particular attribute can be checked by placing one card on top of another.
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- 人工數據處理技術(shù)中的一種卡片索引方法。在該方法中,各個(gè)屬性是用卡片上某個(gè)區域中的孔來(lái)表示的?？蓪⒁粡埧ㄆ旁诹硪粡埳厦鎭?lái)檢查其特定屬性的有無(wú)。
