What are electronic devices? State their basic types.

(N/A) Electronic devices are those devices in which the flow of electrons can be controlled through various materials,such as vacuum tubes,gases,or semiconductors.
There are two basic types of electronic devices:
$(1)$ Vacuum tubes (Valves): These are devices where the flow of electrons is controlled in a vacuum.
$(2)$ Solid-state semiconductor devices: These are devices where the flow of electrons is controlled within a solid semiconductor material,such as silicon or germanium.