Because of technical limitations of computer systems at the time it was invented, ASCII has just 128 code points, of which only 95 are , which severely limited its scope.
bɪkˈʌz ʌv tˈɛknɪkəl lˌɪmɪtˈeɪʃənz ʌv kəmpjˈuːɾɚ sˈɪstəmz æt ðə tˈaɪm ɪt wʌz ɪnvˈɛntᵻd, ˈæski hɐz dʒˈʌst wˈʌnhˈʌndɹɪd twˈɛnti ˈeɪt kˈoʊd pˈɔɪnts, ʌvwˈɪtʃ ˈoʊnli nˈaɪnti fˈaɪv ɑːɹ , wˌɪtʃ sᵻvˈɪɹli lˈɪmɪɾᵻd ɪts skˈoʊp.