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  • Remote control

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    Macintosh TV remote next to Apple's 4th generation Apple TV remote An air conditioning unit remote control A standard remote control symbol used on many TVs, video equipment and remote controls In electronics, a remote control is a component of an electronic device used to operate the device from a distance, usually wirelessly. For example, in consumer electronics, a remote control can be used to operate devices such as a television set, DVD player, or other home appliance, from a short distance. A remote control is primarily a convenience feature for the user, and can allow operation of devices that are out of convenient reach for direct operation of controls. In some cases, remote controls allow a person to operate a device that they otherwise would not be able to reach, as when a garage door opener is triggered from outside or when a Digital Light Processing projector that is mounted on a high ceiling is controlled by a person from the floor level. Early television remote controls (1956–1977) used ultrasonic tones.

  • Projection panel

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    A Projection panel (also called overhead display or LCD panel) is a device that, although no longer in production, was used as a data projector is today. It works with an overhead projector. The panel consists of a translucent LCD, and a fan to keep it cool. The projection panel sits on the bed of the overhead projector, and acts like a piece of transparency. The panels have a VGA input, and sometimes Composite (RCA) and S-Video input. Later models have remotes, with functions such as 'freeze' which lets you freeze the image, useful for when you want to leave something on the screen whilst you do other things. Earlier models only had 640x480 resolution, while newer ones had up to SVGA resolution. Proxima, one maker of the panels, included a magic wand and sensor, which worked with the sensor detecting where you put the wand, to create and interactive effect, the equivalent of today's smart boards. Although they are not produced anymore, used panels can be purchased for a fraction of the price of a data projector. The panels are quite dim, as they do not let a great deal of light through, so brightness can be a problem, even with a powerful overhead projector.

  • Digital Command Center

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    Digital Command Center and the Dimensia Digital Control The Digital Command Center was a very large remote control introduced for RCA's high-end television sets; in 1983 for the Colortrak 2000 and the SJT400 CED player and in 1984 for the Dimensia Lyceum TV sets. The main feature of the Digital Command Center was that it was universal amongst many RCA components, including VCRs, CED players, tuners, amplifiers, CD players, etc., on top of controlling the monitor itself. The Digital Command Center took four AA batteries to power, which is understandable, considering its extensive and ahead-of-its time functionality. The initial Digital Command Center released in 1984 with the Dimensia system, the CRK35A, had 52 buttons, had onboard memory, and weighed nearly a pound with its batteries. In 1985, RCA released the Digital Command Component System, an all audio system that was compatible with all Dimensia audio components, which also used the Digital Command Center remote. The idea of this system was to have the full functionality of the Dimensia's sound system without the need of a Dimensia monitor.

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