Within electronics, solid state circuits come victims that don't contain vacuum tubes. A term was introduced to describe a transition from either valve-depending amplifiers to transistorised amplifiers. Firm-state components go great deal yearn than their thermionic counterparts because of their greater trend lines to shock, vibration & mechanical have on.

When a utilize of vacuum tubes within consumer electronics has decreased (an exception being a CRT still widely used for TV and desktop computer monitors), the term "solid state" has been progressively utilized as a equivalent word for "no moving parts". For instance, digital audio players that store all their songs inside flash memory are often described when solid to differentiate the children from either certain iPod-like gear that apply little hard disks for storage. Such as a older usage, this usage connotes increased lastingness & shock trend lines.