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2. Business card - Wikipedia

   en.wikipedia.org/wiki/Business_card

   Business card size CD. Various technological advances made Compact Disc "business cards" possible, which could hold about 35 to 100 MB of data. These business card CDs may be square, round or oblong but are approximately the same size as a conventional business card. CD business cards are designed to fit within the 80 mm tray of a computer's CD ...

3. vCard - Wikipedia

   en.wikipedia.org/wiki/VCard

   Standard. RFC 6350. vCard, also known as VCF (Virtual Contact File), is a file format standard for electronic business cards. vCards can be attached to e-mail messages, sent via Multimedia Messaging Service (MMS), on the World Wide Web, instant messaging, NFC or through QR code. They can contain name and address information, phone numbers, e ...

4. ISO/IEC 7810 - Wikipedia

   en.wikipedia.org/wiki/ISO/IEC_7810

   An ID-1 size card containing an ID-000 size card is denoted as ID-1/000. This was the common design of SIMs when mini-SIMs were common, usually being issued as standard SIMs, i.e. in ID-1 format, with a removable ID-000 section that, when removed, was a mini-SIM.

5. Eurocard (printed circuit board) - Wikipedia

   en.wikipedia.org/wiki/Eurocard_(printed_circuit...

   Eurocard (printed circuit board) Eurocard is an IEEE standard format for printed circuit board (PCB) cards that can be plugged together into a standard chassis which, in turn, can be mounted in a 19-inch rack. The chassis consists of a series of slotted card guides on the top and bottom, into which the cards are slid so they stand on end, like ...

6. Punched card - Wikipedia

   en.wikipedia.org/wiki/Punched_card

   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 ...

7. Smart card - Wikipedia

   en.wikipedia.org/wiki/Smart_card

   Smart card. A smart card ( SC ), chip card, or integrated circuit card ( ICC or IC card ), is a card used to control access to a resource. It is typically a plastic credit card-sized card with an embedded integrated circuit (IC) chip. [1] Many smart cards include a pattern of metal contacts to electrically connect to the internal chip.