HELP! * GREEN=global GREY=local Global HTML version of Foils prepared December 2,95

Foil 19 What is so important about Digital ?

From Technologies and Issues for Virtual University HPDC95/SC95 Tutorials -- August 1/Dec 4 1995. by Geoffrey C. Fox * See also color IMAGE
Analog as in current Cable Satellite or broadcast TV or radio represents informations by WAVY SHAPES
  • Shapes can be arbitrary and if changed (distorted) canNOT be easily corrected
Digital as in current computers represents everything by NUMBERS and uses "error-correction" so that you receive EXACTLY what is sent with NO distortion of text or images
So information is more precise
  • Can do on-line banking
and looks better -- your great art piece is not distorted or the medical picture is transmitted without adding or subtracting tumors/pathologies etc.
Northeast Parallel Architectures Center, Syracuse University, npac@npac.syr.edu

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