Motorola SSETM 5000 User Manual
Page 213
6881094C12-A
November 11, 2004
Glossary-5
liquid-crystal display
An LCD uses two sheets of polarizing material with a liquid-crystal
solution between them. An electric current passed through the liquid
causes the crystals to align so that light cannot pass through them.
LO
local oscillator
A device used to generate a signal that is combined with another signal
in order to mix the second signal to a different frequency.
low-speed
handshake
150-baud digital data sent to the radio during trunked operation while
receiving audio.
LSH
See low-speed handshake.
Master In Slave Out
SPI data line from a peripheral to the MCU.
Master Out Slave In
SPI data line from the MCU to a peripheral.
MCU
See microcontroller unit.
MDC
Motorola Digital Communications.
MHz
See Megahertz.
Megahertz
One million cycles per second. Used especially as a radio-frequency
unit.
microcontroller unit
Also written as µC. A microprocessor that contains RAM and ROM
components, as well as communications and programming components
and peripherals.
MISO
See Master In Slave Out.
MOSFET
Metal-Oxide-Silicon Field Effect Transistor
MOSI
See Master Out Slave In.
multiplexer
An electronic device that combines several signals for transmission on
some shared medium (e.g., a telephone wire).
MUX
See multiplexer.
NiCd
Nickel-cadmium.
NiMH
Nickel-metal-hydride.
ohm
A unit of electrical resistance.
OMPAC
See over-molded pad-array carrier.
open architecture
A controller configuration that utilizes a microprocessor with extended
ROM, RAM, and EEPROM.
oscillator
An electronic device that produces alternating electric current and
commonly employs tuned circuits and amplifying components.
Term
Definition