The application of a Hamming error correcting code to a standard teletype equipment
R.W. Levell · Journal of the British Institution of Radio Engineers · 1961
The paper describes apparatus which enables a standard single-channel teletype equipment to be converted for use with a Hamming error correcting code. The added apparatus is of small size and involves little interference with existing equipment. The electronic portion of this apparatus has been fully transistorized and a unit construction system, using printed circuit boards, has been employed.