Answer: diodes

AnswerCrossword Clue
DIODES

Some are light-emitting

DIODES

Logic-gate components

DIODES

Some electron tubes

DIODES
Digital watch components
DIODES
Semiconductors
DIODESReceiver components
DIODESTwo-element tubes
DIODESCircuit components
DIODESElectron tubes
DIODESCircuit-board items
DIODESCurrent conduits
DIODESCurrent controllers
DIODESSome semiconductors
DIODESVacuum tubes, used to rectify alternating currents.
DIODESVacuum tubes.
DIODESElectron tubes.
DIODESVacuum tubes
DIODESRadio tubes
DIODESRectifiers
DIODESSome compact light sources
DIODESSome electronic parts
DIODESSemiconductor devices
DIODESElectronic tubes
DIODESLight emitters, maybe
DIODESCalculator parts
DIODESLight emitters