Solid-state electronics

Solid-state electronics are special kinds of machines that use tiny parts called semiconductors. These semiconductors include things like transistors, diodes, and integrated circuits, which help make electronic equipment work. Unlike older machines that had moving parts, solid-state electronics use these tiny parts to do the same jobs without anything moving.

One example is the solid-state relay, where transistors switch on and off instead of using a moving arm like older relays. Another example is the solid-state drive, or SSD, used in computers. SSDs store data using semiconductor memory, which is faster and more reliable than the old hard disk drives that spin around to save information. This makes computers quicker and easier to use.

History

The term solid-state became popular in the 1960s to describe new technology using tiny parts called semiconductors. These tiny parts control electric current in a solid material like silicon, unlike older devices called vacuum tubes that needed a vacuum inside.

Solid-state electronics began with the invention of the transistor in 1947 by John Bardeen, Walter Houser Brattain, and William Shockley at Bell Laboratories. Transistors could do the same jobs as vacuum tubes but were smaller, stronger, and used less energy. This change led to many new devices, like portable consumer electronics such as the transistor radio, cassette tape player, walkie-talkie, and quartz watch, as well as early computers and mobile phones. Other examples include the microprocessor chip, LED lamps, solar cell, cameras using charge coupled device (CCD) image sensor, and semiconductor laser.