"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"
'Da', 'Db' to 'Deb', 'Dec' to 'Des', 'Det' to 'Dig',
'Dih' to 'Dis', 'Do' to 'Dru', 'Dry' to 'Dz',
| D Flip Flop. A style of flip flop who's output follows the input when the device is clocked. The Truth Table for a D-Type flip flop is shown to the right. The output changes on the edge of the clock. The most common IC is the 7474; Dual Positive-Edge-Triggered D-Type Flip-Flops with Set and Reset. IC Vendors. |
 Truth Table |
DAMPED WAVE. A sinusoidal wave in which the amplitude steadily decreases with time. Often associated with energy loss.
DAMPING. The process of smoothing out oscillations. The progressive decay with time in the amplitude of the free oscillations in a circuit. The progressive diminution with time of certain quantities characteristic of a phenomenon. In a meter, this process is used to keep the pointer of the meter from over-shooting the correct reading. A mechanical or electrical technique used in synchro receivers to prevent the rotor from oscillating or spinning. Damping is also used in servosystems to minimize overshoot of the load.
Damping
D'ARSONVAL METER MOVEMENT. The permanent-magnet moving-coil movement used in most analog meters. Note that most meters use digital displays.
DATA ENCRYPTION STANDARD {DES}. A cryptographic algorithm for the protection of unclassified computer data and published by the National Institute of Standards and Technology in Federal Information Processing Standard Publication 46-1.
DATA PROCESSING. The execution of a systematic sequence of operations performed upon data. Synonymous with information processing.
DATA TRANSFER RATE. The average number of bits, characters, or blocks per unit time passing between corresponding equipment in a data transmission system.
DATA TRANSMISSION. The transfer of information from one place to another or from one part of a system to another. The sending of data from one place to another by means of signals over a channel.
Datum. A datum is the origin from which the location or geometric characteristics of features of a part are established.
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