"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"
Z. Symbol used to indicate impedance.
Z-AXIS. In a gyro, an axis through the center of gravity and mutually perpendicular to both the X (spin)
and Y axes.
ZENER DIODE. A PN-junction diode designed to operate in the reverse-bias breakdown region. More Zener Diode data. [Zener Diode Manufacturers]
ZENER EFFECT. A reverse breakdown effect in diodes in which breakdown occurs at reverse voltages below 5 volts. The presence of a high energy field at the junction of a semiconductor produces the breakdown.
Zero-Buffer DDR. [ZB-DDR] A type of Double-Data-Rate [DDR] memory. [DDR Memory Manufacturers]
ZEROFILL. To fill unused storage locations with the
representation of the character denoting “0”. [memory]
ZEROING. The process of adjusting a synchro to its electrical zero position.
Zero insertion force Socket. A ZIF socket requires no force to install an IC into the socket. A spring actuated level is used to clamp the device in place once it has been installed. [Socket Manufacturers].
ZINC. Symbol Zn. Atomic Number 30. Melting Point 419.50C
ZOOM. To change the magnification and focal length of a zoom lens.
ZOOM LENS. A lens having internal movable elements that allow the focal length to be changed
without changing the image plane.
ZONE OF MUTUAL VISIBILITY. The area where the satellite can be seen by both the up- and down-link earth terminals.
ZONE OF SILENCE. Skip zone. The region between alternate reflections of a radio wave, in which no signal is detectable.
ZONE PLATE. A flat glass plate with concentric opaque rings that forms an image caused by
diffraction rather than reflection.
ZULU TIME. [Coordinated Universal Time]. Formerly a synonym for Greenwich Mean Time. Abbreviation; Z Time. [Military].
