18WuD2x

658 stopband • storage register
AM
tuner
CD
player
Tape
player
Turntable
FM
tuner
Left
speaker
stereo system
Amplifier
Right
speaker
stopband The continuous spectrum of frequencies
rejected by a filter, selective amplifier, or other
band-suppression device.
stopband ripple Single or multiple attenuation
peaks within the stopband of an elliptic filter,
where the frequency of the attenuation peak(s)
is/are associated with the resonant circuit(s) in
the filter.
stop code See HALT INSTRUCTION.
stop element In digital transmission, a bit or set of
bits indicating the end of a character, and serving
to inform the receiving device of the end of the
character.
stop filter See BAND-SUPPRESSION FILTER.
stopper resistor See STOPPING RESISTOR.
stopping capacitor See BLOCKING CAPACITOR.
stopping coil See CHOKE COIL.
stopping resistor A parasitic-suppressing resistor,
usually inserted in series with the input
and/or output of a power amplifying device. Also
called stopper resistor.
storage 1. In computer operations, a medium on
which data can be kept for an extended period of
time. Examples: magnetic disk, magnetic tape,
optical disk. 2. The transferring of data from
memory to a more permanent medium. Compare
MEMORY. 3. The retention of data of any kind,
such as an oscilloscope image or video display,
for use at a later time. 4. The retention of electric
energy or charge, as in a capacitor or electrochemical
cell. 5. The retention of energy in the
form of a magnetic field, as in an inductor. 6. The
retention of potential energy in any form.
storage allocation The assignment of computer
memory areas to certain kinds of information, as
outlined in a source program and implemented
by a compiler.
storage battery A rechargeable battery; the technical
term is secondary battery. Also see STOR-
AGE CELL.
storage capacity 1. The amount of data that can
be stored in a specific medium, such as a hard
disk, diskette, or tape. Generally measured in
bytes, kilobytes, megabytes, gigabytes, or terabytes.
2. The energy-delivering capability of a
storage battery in terms of ampere-hours, milliampere-hours,
or other current-time units for a
specific rated voltage.
storage cell 1. An electrochemical cell whose potential
can be restored by charging it with electricity.
Compare PRIMARY CELL. Also see CELL.
2. The smallest part of a computer storage
medium. 3. In computer data storage, the part
that can hold a data unit (e.g., a bit).
storage CRT See STORAGE TUBE.
storage cycle In computer operation, the period
during which a location of a cyclic storage device
cannot be accessed.
storage density The number of data units (e.g.,
bytes, kilobytes, or megabytes) that can be stored
in a given length or area of a storage medium.
storage device A medium into which data can be
placed and kept for later use. Examples: magnetic
disk, magneto-optical disk, optical disk,
and magnetic tape.
storage dump See DUMP.
storage function Abbreviation, STO. The so-called
“memory” function of a microcomputer chip. It
causes data to be inserted into memory or storage
for later use. It is commonly used in programmable
calculators, automatic-dialing telephones, and radio
receivers. Also called memory function.
storage laser A laser that stores intense energy before
flashing.
storage life See SHELF LIFE.
storage mesh In the cathode-ray tube (CRT) of a
storage oscilloscope, a fine metal mesh electrode
that serves as the target on which the image is
electrostatically stored. Also see STORAGE TUBE.
storage oscilloscope An oscilloscope that retains
a displayed image until the display is erased. Also
see STORAGE TUBE.
storage register In computers and calculators, a
storage unit composed of flip-flops. In computers,
it is independent of the central processing unit
(CPU).