The IBM PC defined code page 437, which replaced the control characters with graphic symbols such as smiley faces, and mapped additional graphic characters to the upper 128 positions.
ðɪ ˌaɪbˌiːˈɛm pˌiːsˈiː dᵻfˈaɪnd kˈoʊd pˈeɪdʒ fˈoːɹhˈʌndɹɪd θˈɜːɾi sˈɛvən, wˌɪtʃ ɹᵻplˈeɪst ðə kəntɹˈoʊl kˈæɹɪktɚz wɪð ɡɹˈæfɪk sˈɪmbəlz sˈʌtʃ ɐz smˈaɪli fˈeɪsᵻz, ænd mˈæpt ɐdˈɪʃənəl ɡɹˈæfɪk kˈæɹɪktɚz tə ðɪ ˌʌpɚ wˈʌnhˈʌndɹɪd twˈɛnti ˈeɪt pəzˈɪʃənz.