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  2. Punched card - Wikipedia

    en.wikipedia.org/wiki/Punched_card

    A 12-row/80-column IBM punched card from the mid-twentieth century. A punched card (also punch card[1] or punched-card[2]) is a piece of card stock that stores digital data using punched holes. Punched cards were once common in data processing and the control of automated machines. Punched cards were widely used in the 20th century, where unit ...

  3. Barely 3 Months Post-Launch, Loyalty App Punchcard Is Live In ...

    techcrunch.com/2012/04/27/barely-3-months-post...

    The mobile apps from stealthy loyalty startup Punchcard have only been on the market since February, but the company is now reporting it's close to being cash-flow positive. Like a digital version ...

  4. Bringing Punch Cards Online, Perka Launches A Nifty Loyalty ...

    techcrunch.com/2011/10/05/bringing-punch-cards...

    Perka, a startup coming out of stealth and launching into the public today, wants to offer merchants a new spin on loyalty rewards programs in an effort to become the "antidote" to the 300-plus ...

  5. Punched card input/output - Wikipedia

    en.wikipedia.org/wiki/Punched_card_input/output

    Punched card input/output. A computer punched card reader or just computer card reader is a computer input device used to read computer programs in either source or executable form and data from punched cards. A computer card punch is a computer output device that punches holes in cards. Sometimes computer punch card readers were combined with ...

  6. Category:Punched card - Wikipedia

    en.wikipedia.org/wiki/Category:Punched_card

    Punched card. Wikimedia Commons has media related to Punch cards. This category contains articles about punched cards and card handling equipment, including card readers, card punches, and keypunches .

  7. Square lets merchants offer first visit deals, reward ...

    www.engadget.com/2012-06-19-square-adds-more...

    That means no more scratching around trying to find that bent up punch card, just pay up and -- literally -- reap the rewards. New customers can also now be lured in with the ability for retailers ...

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