I don't want any theories or speculations. I want a real documented electronic device. Oh and no ancient astronaut theories either.
The relay was the first electonic- in a sense, component part other than switches and fuses, etc. It made modern telegraphy possible and evolved into the repeater- thus the relay- a remote controlled switch, was in effect the first ( Electronic) device, though not anything involving crystals, diodes, vacuum tubes etc. Morse devised the Relay as part of his telegraph system circa l844.
Wow, very demanding for someone who needs a favor. The compass. Really. It uses electromagnetic waves to point north. The ability to recognize this and build a device that can use it was the first electronic device.
Diode was the first electronic device.
Baghdad potato it was used for a light bulb
