In 1963, while working at Bell Labs, he developed the BEFLIX programming language for creating bitmap computer-produced movies.
ɪn nˈaɪntiːnhˈʌndɹɪd sˈɪksti θɹˈiː, wˌaɪl wˈɜːkɪŋ æt bˈɛl lˈæbz, hiː dɪvˈɛləpt ðə bᵻflˈɪks pɹˈoʊɡɹæmɪŋ lˈæŋɡwɪdʒ fɔːɹ kɹiːˈeɪɾɪŋ bˈɪtmæp kəmpjˈuːɾɚpɹədˈuːst mˈuːvɪz.