"A"
"B"
"C",
"D",
"E",
"F",
"G",
"H",
"I",
"J",
"K",
"L",
"M",
"N",
"O",
"P",
"Q",
"R",
"S",
"T",
"U",
"V",
"W",
"X",
"Y",
"Z"
Previous section of "Da" definitions and terms
dB. An abbreviation for decibel(s). One tenth of the
common logarithm of the ratio of relative powers,
equal to 0.1 B (bel). Note 1: The decibel is the
conventional relative power ratio, rather than the bel,
for expressing relative powers because the decibel is
smaller and therefore more convenient than the bel.
dBa. An abbreviation for decibels adjusted. Weighted
absolute noise power, calculated in dB referenced to 3.16 picowatts (–85 dBm), which is 0 dBa.
dBm. An abbreviation used to represent power levels above or below a 1-milliwatt reference.
DCE. An abbreviation for data circuit-terminating
equipment. In a data station, the equipment that
performs functions, such as signal conversion and
coding, at the network end of the line between the
data terminal equipment (DTE) and the line, and that
may be a separate or an integral part of the DTE or
of intermediate equipment. The interfacing
equipment that may be required to couple the data
terminal equipment (DTE) into a transmission circuit
or channel and from a transmission circuit or
channel into the DTE.
DEAD SHORT. A short circuit having minimum resistance.
Debounce. A circuit which reduces the signalling from a switches spring-back or vibration. Refer to Switch Debounce
DECIMAL. Pertaining to the number representation system with a radix of ten.
DECIMAL DIGIT. In decimal notation, one of the characters 0 through 9.
DECIMAL NOTATION. A fixed radix notation where the radix is ten.
DECIMAL NUMERAL. A decimal representation of a number.
DECIMAL POINT. The radix point in decimal representation.
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