American Foundation for the Blind York City headquarters. Louis Braille was the Frenchman who invented the raised dot code that bears his name. On January 4, 2009, the 200th anniversary of his birth, AFB created an online gallery that includes pictures of him and digitized books and articles. AFB's main headquarters is in Arlington, Virginia. Other offices include New York City; Dallas, Texas; and Huntington, West Virginia. In 2012, AFB added VisionAware to its family of sites in partnership with the "Reader's Digest" Partners for Sight Foundation. The site folded in content from AFB's Senior Site, with new information and resources for adults of all
Writing system alphabet, or were directly inspired by its design. The first true alphabet is the Greek script which consistently represents vowels since 800 BC. The Latin alphabet, a direct descendant, is by far the most common writing system in use. Several approaches have been taken to classify writing systems, the most common and basic one is a broad division into three categories: "logographic", "syllabic", and "alphabetic" (or "segmental"); however, all three may be found in any given writing system in varying proportions, often making it difficult to categorise a system uniquely. The term "complex system" is sometimes used to describe those