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條碼(bar code / barcode)係一種用嚟將數據以睇到、機械睇得明嘅方式呈現,例如一件貨上面嘅條碼包含咗有關件貨嘅數據,件貨嘅條碼俾人用條碼掃描器掃嗰陣,供應件貨嘅企業就可以知「件貨俾人買咗」。
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