Electronic Glossary

An amplifier in which the output is in proportion to the differences between voltages applied to its two inputs.

A method of signal transmission through two traces which always have opposite states. The signal data is the polarity difference between the traces in printed circuit board.

Relating to devices or circuits that have outputs of only two discrete levels. Examples: 0 or 1, high or low, on or off, true or false etc.

A circuit which operates like a switch (it is either “on” or “off”), and can make logical decisions. It is used in computers or similar decision making equipment.

A Digital Signal is a signal that is being used to represent data as a sequence of discrete values; at any given time it can only take on, at most, one of a finite number of values. This contrasts with …

A measure of the dimensional change of a material that is caused by factors such as temperature changes, humidity changes, chemical treatment, and stress exposure.

A hole in a printed board whose location is determined by physical dimensions or coordinate values that do not necessarily coincide with the stated grid.

Dimple (or bump) in printed circuit board (PCB) typically stands for via fill quality, which represents the difference between deposited copper thickness on initial copper (A) and within a via (or microvia) (B). Equation: Dimple= A – B In HDI …

A diode is a two-terminal electronic component that conducts current primarily in one direction (asymmetric conductance); it has low (ideally zero) resistance in one direction, and high (ideally infinite) resistance in the other. A diode vacuum tube or thermionic diode …

Dual in-line package (DIP) is an integrated circuit package that has two rows of pins or lead-wires for through-hole mounting positioned along opposing long sides of the package. The number of leads and the spacings between leads and between rows …