ASCII Character Set
Ascii Character Set
Serial communication using single byte (8 bit) characters generally use the Ascii character encoding system. The standard ASCII character set uses only 7 bits of the 8 bit byte for each character. The first 32 characters are non-printing control characters, such as Carriage Return (decimal value 13) and Line Feed (decimal value 10). The extra characters from 128 onwards are used to represent graphics characters or symbols, and mathematical representations or symbols.