Solid-state electronics means semiconductor electronics: electronic equipment using semiconductor devices such as transistors, diodes and integrated circuits.

What is a solid-state simple?

1 : relating to the properties, structure, or reactivity of solid material especially : relating to the arrangement or behavior of ions, molecules, nucleons, electrons, and holes in the crystals of a substance (such as a semiconductor) or to the effect of crystal imperfections on the properties of a solid substance ...

Why is it called solid-state?

Solid-state gets its name from the path that electrical signals take through solid pieces of semi-conductor material. Prior to the use of solid-state devices, such as the common transistor, electricity passed through the various elements inside of a heated vacuum tube.