Chorded keyboard (a writing system for the blind) uses either 6 or 8 tactile 'points' from which all letters and numbers are formed. When Louis Braille invented it, it was produced with a needle holing successively all needed points in a cardboard sheet. In 1892, Frank Haven Hall, superintendent of the Illinois Institute for the Education of the Blind, created the Hall Braille Writer, which was like a typewriter with 6 keys, one for each dot in a braille cell. The Perkins Brailler, first manufactured in 1951, uses a 6-key chord keyboard (plus a spacebar) to produce braille output, and has been
Black to the Blind Black to the Blind Black to the Blind is the third album by the Polish death metal band Vader. It was released on 13 October 1997 in Europe and Poland by System Shock/Impact Records and Koch International Poland, respectively. Japanese edition with one bonus track was released by Avalon/Marquee. The album was nominated for a Fryderyk Award in the category 'Hard & Heavy Album of the Year (Album roku - hard & heavy)'. Black to the Blind was recorded between July and August 1997 at Selani Studio in Olsztyn, Poland, and was produced by Piotr "Peter" Wiwczarek and Andrzej Bomba.