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{{essay-like|date=February 2013}}
{{Refimprove|date=November 2007}}
{{Tone|date=April 2008}}
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{{Demoscene}}
Within the computer [[subculture]] known as the ''[[demoscene]]'which is '', a non-[[Interactivity|interactive]] [[Multimedia|multimedia presentation]] is called a '''demo''' (or '''[[Technology demonstration|demonstration]]'''). [[Demogroup]]s create demos to demonstrate their abilities in [[Computer programming|programming]], [[music]], [[drawing]], and [[3D modeling]]. The key difference between a classical animation and a demo is that the display of a demo is computed in [[real-time computing|real time]], making computing power considerations the biggest challenge. Demos are mostly composed of [[3D animation]]s mixed with [[2D computer graphics|2D]] [[demo effect|effects]] and [[full screen effect]]s.
The boot block demos of the 1980s, demos that were created to fit within the small (generally 512 to 4096 bytes) first block of the [[floppy disk]] that was to be loaded into [[Random Access Memory|RAM]],<ref>See the [[BIOS]] page</ref> were typically created so that [[software cracking|software crackers]] could boast of their accomplishment prior to the loading of the game. What began as a type of electronic [[graffiti]] on cracked software became an [[Art|art form]] unto itself. The [[demoscene]] both produced and inspired many techniques used by [[video games]] and [[3D rendering]] applications today - for instance, [[light bloom]], among others.
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