Card

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A card is generally a small flat object, typically made from heavy paper or plastic. Many types include:

Business card, a card containing contact information for a person or business
Credit card, a plastic card for buying things on credit
Debit card, a plastic card for buying things using money in a bank account
Expansion card, a device attached generally inside a computer, that provides added functionality, such as a graphics card or a sound card
Greeting card, usually folded paper that is mailed or given to a relative, friend, or associate to express a message of greeting, appreciation, or some other sentiment
Health card, a token to be used as patient data card (PDC) or health professional card (HPC)
ID card, an identity document
Index card, a card for creating and organizing notes in a stack, usually for a research project
Penalty card for rule violations in several sports
Playing card, a card, typically made of laminated paper, used for playing games
Postcard, a card used for sending messages in the mail without use of an envelope
Punch card, an obsolete method for storing data
Smart card, a plastic card containing a computer chip (also known as a Key Card)
Trading card, a card used for trading or collecting, or for use in a collectible card game
Value card, a self-help device listing behavior changes the bearer wants to make

Non-physical analogues of physical cards:

E-card, an electronic version of a greeting card or postcard
Test card, also known as a test pattern, a television test signal, typically broadcast at times when the transmitter is active, but no programmes are being broadcast

Card may also refer to:

Card (professional wrestling), the lineup of the matches that will be staged at a given venue for a given perfomance
Orson Scott Card, an author best known for the Ender's Game Series

See also