The study of signs is divided between those scholars who use the Saussurian binary sign (semiology) and those who prefer Charles Peirce's tripartite sign (semiotics). The common view of the opposition between the two types of signs does not take into consideration the methodological conditions of applicability of these two types of signs. This is particularly important in the field of literary studies and hence for the preparation of electronic programs for text analysis. The Peircian sign explicitly entails the discovery of a truth of meaning that claims to be universal and not reducible to a collection of opinions based on fragmented information; it also imposes the task of elucidating a transhistorical and universal significantion encoded in a text. Contrary to Peirce's view of the sign, our use of computer programs for text analysis, however, demonstrates that we implicitly treat every literary text as a set of linguistic data (letters, phonemes, syntagmatic segments, etc.) which are reducible to units that can be treated separately. A brief comparison of the results obtained from computer analyses of the French poet Stéphane Mallarmé's text, “Le Cygne,” with those obtained from two Peircian analyses (by Riffaterre and Champigny) of the same text demonstrates that our current methods of computer textual analysis are based on a Saussurian semiology, which is unidimensional and limited, and that these methods are still quite unable to produce a semiotic interpretation based on a totalizing hierarchy of the text's various discursive components.