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  2. Picture communication symbols - Wikipedia

    en.wikipedia.org/wiki/Picture_communication_symbols

    Picture communication symbols (PCS) are a set of colour and black & white drawings originally developed by Mayer-Johnson, LLC for use in augmentative and alternative communication (AAC) systems. These AAC systems may be high-tech, such as the TD Pilot, or low-tech such as a communication board. PCS symbols are now owned and maintained by Tobii ...

  3. List of typographical symbols and punctuation marks

    en.wikipedia.org/wiki/List_of_typographical...

    Typographical symbols and punctuation marks are marks and symbols used in typography with a variety of purposes such as to help with legibility and accessibility, or to identify special cases. This list gives those most commonly encountered with Latin script. For a far more comprehensive list of symbols and signs, see List of Unicode characters.

  4. Universal Character Set characters - Wikipedia

    en.wikipedia.org/wiki/Universal_Character_Set...

    The Unicode Consortium and the ISO/IEC JTC 1/SC 2/WG 2 jointly collaborate on the list of the characters in the Universal Coded Character Set.The Universal Coded Character Set, most commonly called the Universal Character Set (abbr. UCS, official designation: ISO/IEC 10646), is an international standard to map characters, discrete symbols used in natural language, mathematics, music, and other ...

  5. Blissymbols - Wikipedia

    en.wikipedia.org/wiki/Blissymbols

    Blissymbols or Blissymbolics is a constructed language conceived as an ideographic writing system called Semantography consisting of several hundred basic symbols, each representing a concept, which can be composed together to generate new symbols that represent new concepts.

  6. Display contrast - Wikipedia

    en.wikipedia.org/wiki/Display_contrast

    The "luminance contrast" is the ratio between the higher luminance, L H, and the lower luminance, L L, that define the feature to be detected.This ratio, often called contrast ratio, CR, (actually being a luminance ratio), is often used for high luminances and for specification of the contrast of electronic visual display devices.

  7. Contrast ratio - Wikipedia

    en.wikipedia.org/wiki/Contrast_ratio

    An LCD technology is dynamic contrast (DC), also called advanced contrast ratio (ACR), and smart contrast ratio (SCR [4]) and various other designations.When there is a need to display a dark image, a display that supports dynamic contrast underpowers the backlight lamp (or decreases the aperture of the projector's lens using an iris), but proportionately amplifies the transmission through the ...

  8. DynaVox - Wikipedia

    en.wikipedia.org/wiki/DynaVox

    The Company did not appeal the NASDAQ staff's determination. The company has been advised by OTC Markets Group Inc. that its Class A common stock will be immediately eligible for trading on the OTCQB marketplace effective with the open of business on April 16, 2013. The company's Class A common stock will continue to trade under the symbol DVOX.

  9. Grayscale - Wikipedia

    en.wikipedia.org/wiki/Grayscale

    The contrast ranges from black at the weakest intensity to white at the strongest. [1] Grayscale images are distinct from one-bit bi-tonal black-and-white images, which, in the context of computer imaging, are images with only two colors: black and white (also called bilevel or binary images). Grayscale images have many shades of gray in between.