GUIDE TO DATA COMPRESSION METHODS WITH CD-ROM - Softcover

SALOMAN DAVID

Softcover

ISBN 10: 818489712X ISBN 13: 9788184897128

Publisher: SPRINGER, 2010

Synopsis

In 1829, Louis Braille, a young organist in a Paris church, blind since age 3, invented the well-known code for the blind, still in common use today all over the world and named after him. Braille himself modified his code in 1834, and there have been several modifications since. However, the basic design of this code, where each character is represented by a group of 3 x 2 dots, has remained intact. The dots are embossed on thick paper and each can be raised or flat (i. e. , present or absent). Each dot is therefore equivalent to one bit of information. As a result, the Braille code (Figure 1) is a 6-bit code and can therefore represent 64 symbols (the code of six flat dots indicates a blank space). Braille's followers extended the capabilities of his code in several ways. One im­ portant extension is contractions. These are letters that, when they stand alone, mean words. For example, the letter b standing alone (or with punctuation) means the word but, the letter e standing alone m

Edition details

• Publisher: SPRINGER
• Publication date: 2010
• ISBN 10: 818489712X
• ISBN 13: 9788184897128
• Binding: Paperback
• Language: English