Useful abbreviations for electrical engineering

DGNDDigital Ground
AGNDAnalog Ground
PWMPulse width modulation
ITAInterface Test Adaptor
PDRPreliminary Design Review
PSPower Supply
CDRCritical Design Review
SRRSystem Requirement Review
TRDTest Requirement Document
TRPTest Requirement Procedure
UUTUnit Under Test
BITBuilt-in Test
DCDirect Current
 EOL End Of Life
 I/O Input/Output
 MTBF Mean Time Between Failure
PDUPower Distribution Unit
 MTTR Mean Time To Repair
PPSPulse Per Second
RTCReal Time Clock
QAQuality Assurance
TBCTo Be Confirmed
TBDTo Be Defined
TBRTo Be Reviewed
UARTUniversal Asynchrony Receive Transmit
UUTUnit Under Test
TBATo Be Added