A memory card is used to read or write moderate amounts of
data. There are three types of memory card:
–A static-random-access-memory (SRAM) card backs up
computer memory. The card has its own battery.
–A read-only-memory (ROM) card is used for reading data
only.
–A Flash memory card is a writeable and readable card. No
battery is needed.
Modem Cards
A fax modem card is used for communication through a telephone
line; ac power is not needed. You can use this card to access the
PC network or the Internet, or to send a fax.
Network Cards
A LAN/Network card physically connects PCs in a LAN or
Network. The following LAN-or-Network cards are available:
– An Ethernet card is for constructing a small area network.
–A TokenRing card is for constructing a global area network.
– An IBM 3270 card and an IBM 5250 card are also available.
An integrated services digital network (ISDN) card is used to
connect your computer to the ISDN network.
SCSI Cards
A small computer system interface (SCSI) card connects your
computer to a SCSI device. For example, it enables you to use a
SCSI disk drive that cannot fit in a small notebook PC.
Other PC Cards
A sound card enables your computer to play music and other
sounds. It typically has an audio and a MIDI in/out connector.
A video capture card captures signals from video devices,
enabling you to use the data in your computer.
There are also multi-function PC Cards, such as the Combo Card
and the Multi Function Card.
40
IBM ThinkPad 600 Online Book
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