A card on which binary coded data are recorded with recording density larger than a punched card. The recorded data can be readout by optical or magnetic readers.

 
  • 一种二进制编码数据卡片,其记录密度大于穿孔卡片。所记录的数据可由光学或磁学读卡机读出。
今日热词
目录 附录 查词历史