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dual in-line package (DIP): A standard for packaging integrated circuits by enclosing
them in a rectangle of ceramic or plastic with downward-pointing connection
pins.
duplex: The method used to transmit data in both directions between two devices.
Synonymous with full duplex. See also half duplex, full duplex.
E
EISA: Extended ISA, an expansion bus design that maintains compatibility with ISA but
provides a 32-bit data path and additional features. It provides much faster
data throughput than ISA and is used in high-performance servers.
emulation: A technique in which a device or program imitates another device or program.
enable: To turn on a computer option.
erase: See delete.
error-correcting code: Code designed for transmission of electronic data that encodes
data in such a way that transmission errors may be detected and corrected by
examination of the encoded data on the receiving end. Error-correcting code is
used in most modems and in some RAM. In the latter case, circuitry is used
that generates checksums to correct errors greater than one bit.
escape: (1) To cancel the task currently in progress. (2) A code (ASCII code 27,
generated by the Esc key) telling the computer that what follows are
commands, not data. Used with peripheral devices such as printers and
modems.
Ethernet: A local area network (LAN) standard for hardware, communications, and
cabling. It links network nodes in a bus topology using coaxial cable, or in a
star topology using fiber-optic cable or twisted-pair cable. Normally, all nodes
share the total bandwidth, which is 10 Mbps (Ethernet), 100 Mbps (Fast
Ethernet), or 1000 Mbps (Gigabit Ethernet). With switched Ethernet, each
sender and receiver pair have the full bandwidth.
execute: To perform a command or run a program.
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