Punch cards store data. That data can then be analysed by feeding the cards into a punch card reader.

Do not punch out the time card and report the incident to your immediate supervisor

The Punch Card application works best with the Mac operating system, but the application will work with any operating system. The Punch Card application works with the iTunes program.

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An electronic punch card system was the first data entry system for computers. Cards were punched with holes according to the information that was stored or directions for the computer. The card was inserted into a card reader and the data was collected. Factories still use a type of punch card system with their manual time cards. Only with the time card, information is printed on the card instead of holes punched.