1. A text search system for deciding en bloc whether or not a plurality of user-designated search terms exist in a text composed of characters expressed in the form of character codes, characterized in that said system comprises: character string storage means for storing a text; filtering means for fetching character codes from the text read out from said character string storage means to thereby output only those character codes that are included in said search terms; character string matching means for matching en bloc a string of character codes outputted from said filtering means with said search terms to thereby decide whether or not said search terms exist in said string of character codes outputted from said filtering means; and synchronizing means provided between said filtering means and said character string matching means for buffering differences in processing speed while transferring data from said filtering means to said character string matching means.
6. A text search system set forth in claim 1 further comprising, text search system further comprises first-in/first-out type buffering means for storing a string of character codes outputted from said filtering means and then outputting said stored string of character codes to said character matching means in dependence on the processing state of said character string matching means.