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Protocol - In computing, a protocol is a convention or standard that controls or enables the connection, communication, and data transfer between two computing endpoints. In its simplest form, a protocol can be . Used . defined as the rules governing the syntax, semantics, and synchronization of communication. Protocols may be implemented by hardware, software, or a combination of the two. At the lowest leve. Used . l, a protocol defines the behavior of a hardware connection.

Protocols should be distinguished from technical standards, which variously specify how to build a computer or related hardware device,...

Auxiliary Input - A signal path that goes back to the sound console for line lever signals sent to a seperate outboard piece of equipment such as an EQ, Delay, Effect Processor, etc, via an Auxiliary Send.. Used . . Used . ...

Moving Lights - Moving lights or intelligent fixtures were originally implemented in 1972, but the first computer-controlled stage lighting fixtures began to gain widespread acceptance in the concert industry in the . Used . early 1980's. As the digital age progressed, the cost of these fixtures was reduced and they slowly started being used in more 'traditional' theatrical environments. Intelligent fixtures are . Used . currently used in almost all major theatrical productions.

Usually relying on compact arc lamps as a light source, these fixtures generally use stepper motors connected to varying internal devices...

Zoom Lens - A mechanical assembly of lens elements with the capability to vary its focal length allowing for a closer or farther view of a subject, without changing perspective. Zoom lenses are often described b. Used . y the ratio of their focal lengths from longest to shortest. A 100mm to 400mm zoom may be described as a 4:1 or 4× zoom.

. Used . ...

Alternating Current - An alternating current (AC) is an electrical current where the magnitude and direction of the current varies cyclically, as opposed to direct current, where the direction of the current stays constan. Used . t. The usual waveform of an AC power circuit is a sine wave, as this results in the most efficient transmission of energy. However in certain applications different waveforms are used, such a. Used . s triangular or square waves.

Used generically, AC refers to the form in which electricity is delivered to businesses and residences. However, audio and radio signals carried on electrical wire ar