NTP - Network Time Protocol
SNTP - Simple Network Time Protocol

GPS - Global Positioning System
UTC - Coordinated Universal Time

MSF - Radio Time Signal for Storbritannien
Wwvb - Radio Time Signal for amerikansk
DCF - Radio Time Signal for Tyskland

LAN - Local Area Network
UDP - User Datagram Protocol
TCP - Transmission Control Protocol
IP - Internet Protocol

TDF - Radio Time Signal for Frankrig
CHU - Radio Time Signal for Canada
JJY - Radio Time Signal for Japan
HBG - Radio Time Signal for Schweiz

USB - Universal Serial Bus
RTC - Real Time Clock
AM - Amplitude Modulation
APM - Automatisk Power Management
DES - Data Encryption Standard
ESD - Elektrostatisk udladning
FM - Frequency Modulation
IETF - Internet Engineering Task Force
IRIG - Inter-Range Instrumentation Group

MD5 - Message Digest
PPM - Del Per Million
PPS - Pulse Per Second
RFC - anmodning om kommentarer
SA - Selective Availability
TAI - International Atomic Time
SI - internationale enhedssystem