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72 Appendix A: Hardware glossary
• Display memory
Display memory is a storage area used for displaying data. Since a computer sends
out data faster than a screen can display it, the data is temporarily stored in display
memory.
• Driver
A software program that services an operating system so that the operating system
can use a hardware device.
• Ethernet
The most common standard for the physical wiring and signalling on a local area
network (LAN). The Gbit Ethernet LAN supports data transfer at rates of 10,
100, or 1000 Mbits/sec.
See also LAN.
• Ethernet cable
A wire similar to a telephone cable that carries the signals between Ethernet
devices.
• Flash module
A connector used to split a USB header into two USB ports.
• FPGA
Field-programmable gate array. An array of digital electronic components that can
be programmed to perform a specific function. An FPGA can contain logic gates,
lookup tables, flip-flops, and programmable interconnect wiring. This
combination of customizability and functionality allows for the same FPGA to be
used in a variety of projects.
• Full-duplex mode
A communication method that involves sending and receiving information
simultaneously. For example, a switch can operate in full-duplex mode.
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