User's Manual

Table Of Contents
Glossary
G-2 Glossary
Frequency Modulation (FM)
Modulation by varying the frequency of a fixed-amplitude carrier signal in accordance with an
information signal. Contrast with amplitude modulation (AM).
Frequency-Shift Keying (FSK)
Frequency modulation of a carrier by a digital modulating signal.
FSK
See Frequency-shift keying.
LED
See light emitting diode.
LF
Abbreviation for low frequency band-30 to 300 kHz.
Light-emitting diode (LED)
A unit that accepts electrical impulses and converts them into a light signal.
OOK
On/Off Keying.
PCB
Printed circuit board.
PEROM
Programmable and erasable read only memory.
RAM
See Random Access Memory.
Random Access Memory (RAM)
Semiconductor-based memory that can be read and written by the microprocessor or other hardware
devices. (Generally referred to as volatile memory that can be written or read.)
Read Only Memory (ROM)
Semiconductor-based memory that contains instruction or data that can be read but not modifies.
(Generally, the term ROM often means any read-only device.)
RFID
Radio Frequency Identification.
ROM
See Read Only Memory.
Rx
Receiver.
SRAM
Static Read Only Memory.