A card may refer to any of the following:
1. With desktop computers, card is an abbreviation used for an expansion card. It may describe any of the following types of expansion cards.
Examples of expansion cards
- Interface card (ATA, Bluetooth, EIDE, FireWire, IDE, parallel, RAID, SCSI, serial, and USB).
- MPEG decoder
- Network card
- Sound card
- Video capture card
- Video card
2. With memory and storage, a card may describe an SD card, often found and used with digital cameras and smartphones.
3. When describing a card for accessing a building or room, an access card is a plastic card with a magnetic strip or chip. An access card gives the person with the card access to a restricted area by swiping or tapping the card to open a door.
4. With laptops and portable computers, a card can describe a PC Card or a PCMCIA card.
5. With earlier computers, a card could describe a punch card.
6. When referring to a card used to make purchases, an electronic card is a digital credit card used with a digital wallet to make purchases without the physical card.