What does BNC mean?

BNC is a signal wire connector for household closed-circuit television. Also known as BNC connector, it is a kind of connector used for coaxial cable, the full name is bayonet nut connector (the name vividly describes the shape of this connector), and it is also known as British Navy connector (probably the earliest connector used by the British Navy) or bayonet Neil Counselman (Neil Counselman's bayonet was invented by a man named Neil Counselman). BNC interface is usually called thin coaxial cable interface. BNC interface can isolate video input signals and reduce mutual interference between signals. The signal bandwidth is larger than that of ordinary 15-pin D interface, which can achieve better signal response effect.