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8.Initialisms
Initialisms and Definitions
Initialism
Definition
AC
Alternating current
DC
Direct current
ETSI
European Telecommunications Standards Institute
GND
Ground
GPIO
General purpose input output
I/O
Input/output
IoT
Internet of Things
I2C
Inter-integrated circuit
LGA
Land grid array
LTE
Long Term Evolution
N/A
Not/applicable
OS
Operating system
PIN
Personal identification number
SIM
Subscriber identity module
SPI
Serial peripheral interface
UART
Universal asynchronous receiver-transmitter
UIM
User identity module
USB
Universal serial bus
Vref
Voltage reference
RFU
Reserved for future use
HD-FDD
Half Duplex-FDD
WNC
Wistron NeWeb Corporation