DIODES

Some are light-emitting

• Calculator components

• Calculator parts

• Circuit components

• Circuit-board items

• Current conduits

• Current controllers

• Digital watch components

• Electron tubes

• Light emitters

• Light emitters, maybe

• Logic-gate components

• Old radio tubes

• Receiver components

• Rectifiers

• Semiconductors

• Some compact light sources

• Some electron tubes

• Some electronic parts

• Some rectifiers

• Some semiconductors