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unit record equipment中文是什么意思

  • 穿孔卡片设备
  • 单位记录设备
  • 单位记录装置
  • 单元记录设备
  • 单元记录装置

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  • 例句与用法
  • Unit record equipment
    单位记录设备
  • 百科解释
Before the advent of electronic computers, data processing was performed using electromechanical devices called unit recordIn the late 1800s, early 1900s unit record was a reference to the recording of all information about a transaction or object on one document. At that time the library index card was pointed out as an early example of a unit record.
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Last modified time:Fri, 15 Aug 2025 00:29:56 GMT

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