Richard Hamming
... that Richard Hamming introduced what is now called the Hamming distance , the number of positions in which two code words differ?
... that <b id="mwCJo"><a href="./Richard_Hamming" id="mwCJs" rel="mw:WikiLink" title="Richard Hamming">Richard Hamming</a></b> introduced what is now called the <a href="./Hamming_distance" id="mwCJw" rel="mw:WikiLink" title="Hamming distance">Hamming distance</a> <i id="mwCJ0">(illustrated)</i>, the number of positions in which two <a class="mw-disambig" href="./Code_word" id="mwCJ4" rel="mw:WikiLink" title="Code word">code words</a> differ?