COMMUNICATION DEVICE AND TEXT CODING AND DECODING METHOD

A communication device includes a text coding and decoding system. The text coding system indexing coded characters of the text data into five-bit first strings according the coding table according to a coding table, line up the five-bit first strings in sequence to form an array, divide the array into eight-bit second strings, and embed a preset indicatory code, a data coding scheme and a length of the array. The text decoding system converts the array into the five-bit first strings according to the data coding scheme, and index the coding table for determining the character of each five-bit first string.