Related Clues:
- Electron tube with two elements
- Transistor ancestor
- It has two terminals
- Electronic device
- Digital clock's light emitter
- L.E.D. part
- Electrical component
- Cellphone component
- ''Light-emitting'' electronic device
- Vacuum-tube type
- Electronics tube
- Old vacuum tube
- Electronic verses in praise of the late Princess of Wales?
- Perish the sound of poetry for a semiconductor
- Cell-phone part