102
Glossary
descender
The portion of a printed, lowercase character that
appears below the base line. For example, “g,” “j,” “p,”
“q,” and “y” all are characters with lowercase descenders.
diagnostic
Pertains to the detection and isolation of printer
malfunctions or mistakes.
DIP
Acronym for
Dual In-line Package. A method of
packaging semiconductor components in rectangular
cases with parallel rows of electrical contacts.
DIP switch
A DIP equipped with switches. A typical DIP switch has
from four to ten individual switches mounted in its
package. The individual switches are typically toggle,
rocker, or slide switches.
disable
To deactivate or set to OFF.
diskette
A thin, flexible magnetic disk containing software such as
test and diagnostic programs, initialization files, and all
font specifications for the printer.
DP
Abbrev. for
Data Processing.
See also
HS for Draft Print.
draft
A limited dot font used for rough copy. Low print quality
but fast printing speed.
DRAM
Acronym for
Dynamic Random-Access Memory.
DSR
Abbrev. for
Data Set Ready. Status signal to the printer
indicating the host is in a ready condition.
DTR
Abbrev. for
Data Terminal Ready. Control signal from the
printer indicating it is in a ready condition.
E
ECMA
Abbrev. for
European Computer Manufacturers
Association.
EIA/TIA
Abbrev. for
Electronic Industries Association/
Telecommunications Industry Association
Elite
A name indicating a monospaced font with a pitch of 12
cpi (and usually 10 points in height).
em
A unit of measure in typesetting: the width of a piece of
type about as wide as it is tall. (Derived from uppercase
M, usually the widest character in a set.)
emulation
Refers to the ability of a printer to execute the commands
of another printer protocol. When used as a proper noun
(e.g., Epson LQ-1600K Emulation), it means printer
protocol.
See also
compatibility and protocol.
en
A unit of measure in typesetting equal to half the width of
an em.
enable
To activate, make true (1), or set to on.
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Страница 90: ...90 Appendix A...
Страница 98: ...98 Appendix C Bit Image Graphics...
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