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Zoetrope - Early device for creating the illusion of continuous motion. A sequence of still pictures was viewed rapidly through slits in a rotating drum so that the images appeared to merge. . Used . . Used . ...

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,...

Digital Projection - A digital projection display system is a computerized display that projects an image, often a logo, on a screen, building or other architectural features like the court in a sports arena. Such devices. Used . are commonly used in presentations or as promotional devices. These displays use a very bright light to project the image, and can generally correct any curves, blurriness, and other inconsi. Used . stencies in the image....

Crank Lifts - A crank lift is used to manually lift and set a section of scaffolding into place.. Used . . Used . ...

Speaker - A speaker is a device that converts an electrical signal into the equivalent air vibrations in order to make audible sound.. Used . . Used . ...