There are four major forms of digital television (DTV) broadcast in the United Kingdom: a direct-to-home satellite service from the Astra 28.2°E satellites provided by British Sky Broadcasting (known as Sky); a cable television service provided by Virgin Media (known as Virgin TV); a free-to-air satellite service called Freesat; and a free-to-air digital terrestrial service called Freeview. In addition, an IPTV system known as BT Vision is provided by BT. Individual access methods vary throughout the country. 77% of the United Kingdom has access to HDTV via terrestrial digital television. Satellite is the only source of HDTV broadcast available for the remaining 23%.
... In electronics, a digital-to-analog converter (DAC or D-to-A) is a device that converts a digital (usually binary) code to an analog signal (current, voltage, or electric ... An analog-to-digital converter (ADC) performs the reverse operation ... Signals are easily stored and transmitted in digital form, but a DAC is needed for the signal to be recognized by human senses or other non-digital systems ...
... Country Release date Format Label Canada January 26, 2007 Digital download Epic Records France United Kingdom March 2, 2007 Digital download United Kingdom March 13, 2007 CD single Germany March 23, 2007 CD single ...
... Even though digital signals are generally associated with the binary electronic digital systems used in modern electronics and computing, digital systems are actually ancient, and need not be ... can be used as a very advanced, yet basic digital calculator that uses beads on rows to represent numbers ... A beacon is perhaps the simplest non-electronic digital signal, with just two states (on and off) ...
... Sky, there are BBC HD, Channel 4 HD, Sky1 HD, FX HD, Sky Arts HD, Luxe.tv HD, Sky Premiere HD, Sky Movies HD1 2, Sky Sports HD1,2 3, Rush HD Discovery HD, National Geographic Channel HD, The History Channel HD Sky Box Office HD1 2 and Sci-Fi HD ... Public consultation on the Trust's provisional conclusions on the proposed BBC HD service] ended on 23 October 2007 ...
... The use of digital models in orthodontics is rapidly increasing as the industry undergoes analog to digital conversions in record keeping ... Digital laboratories are currently being used by many orthodontists, but can be very expensive ...
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“A box of teak, a box of sandalwood,
A brass-ringed spyglass in a case,
A coin, leaf-thin with many polishings,
Last kingdom of a gold forgotten face,
These lie about the room....”
—Philip Larkin (19221986)
“And hereby hangs a moral highly applicable to our own trustee-ridden universities, if to nothing else. If we really wanted liberty of speech and thought, we could probably get itSpain fifty years ago certainly had a longer tradition of despotism than has the United Statesbut do we want it? In these years we will see.”
—John Dos Passos (18961970)
“What is a television apparatus to man, who has only to shut his eyes to see the most inaccessible regions of the seen and the never seen, who has only to imagine in order to pierce through walls and cause all the planetary Baghdads of his dreams to rise from the dust.”
—Salvador Dali (19041989)