The equipment used to receive the transmitted modulated radio-frequency

signals and produce synchronized visual images and sound.

The equipment used to record images or scenes. Used in any telecasts for the visual

presentations.

A movie projector is an opto-mechanical device for displaying moving pictures by projecting them on a Most of the optical and mechanical projection screen. Elements, except for the illumination and sound devices, are present in movie cameras.

An opto-mechanical device to view photographic slides. Slide projectors were common in the 1950s and 1960s as a form of entertainment.

A video projector takes a video signal and projects the corresponding image on a projection screen using a lens system. All video projectors use a very bright light to project the image. Video projectors are widely used for conference room presentations, classroom training, home theater and live events applications.

Flat, printed, or drawn pictures or other materials, as well as three-dimensional objects, may be projected. This Machine Operates with reflected light: the lamp illuminates the material, & the image is reflected by a mirror through the lens to the screen.

One of the simplest visual communication devices, easy to maintain & use. Bright lamp source transmits light through the translucent material to a screen quite close to the machine.

Reads either films or paper, containing micro reproductions of documents for transmission, storage, reading, and printing. Three formats are common: microfilm (reels), aperture cards and microfiche (flat sheets). Requiring the user to carefully wind and rewind until they have arrived at the point where the data they are looking for is stored.

A piece of audio equipment is any device designed principally to reproduce, record or process sound. This includes microphones, radio receivers, AV receivers, CD receivers, tape recorders, amplifiers, mixing consoles, effects unit and loudspeakers.