ALL UNIDIRECTIONAL ERROR-DETECTING CODE FOR UNIVERSAL APPLICATIONS

A code has been devised with a minimum distance D(c) = 2 to detect all unidirectional errors possible during communication. The ten decimal digits 0 to 9 are encoded using code words, each of which have seven b its. This is an unordered code with the minimum complexity in encoding and decoding to identify a code-word. The code is framed employing th e uniform weight policy. This unique feature makes our code a complete unidirectional error-detecting code. In addition, the code proposed c an cor-rect one unidirectional error automatically by the proposed rec eiving-end logic. In addition, a uniform weighted code is suggested fo r ASCII which can detect all unidirectional errors with a limited 1-bi t error correction ability.