RCA

RCA Corporation, founded as Radio Corporation of America, was an electronics company in existence from 1919 to 1986. Currently, the RCA trademark is owned by the French conglomerate Thomson SA through RCA Trademark Management S.A., a company owned by Thomson. The trademark is used by Sony Music Entertainment and Thomson SA, which licenses the name to other companies like Audiovox and TCL Corporation for products descended from that common ancestor.

An RCA connector, sometimes called cinch plug or lotus plug, is a type of electrical connector that is commonly used in the audio/video market. The name "RCA" derives from the Radio Corporation of America, which introduced the design by the early 1940s to allow mono phonograph players to be connected to amplifiers.
For many other applications it began to replace the older jack plugs used in the audio world when component high fidelity started becoming popular in the 1950s.
The corresponding plug is called an RCA plug or phono plug, for "phonograph". The name "phono plug" is often confused with a "phone plug" which refers to a jack plug or TRS connector.