On the keyboard shown, the round buttons at the top control software which can magnify the screen (zoom in), change the background color of the screen, or make the mouse cursor on the screen larger.
ɔnðə kˈiːboːɹd ʃˈoʊn, ðə ɹˈaʊnd bˈʌʔn̩z æt ðə tˈɑːp kəntɹˈoʊl sˈɔftwɛɹ wˌɪtʃ kæn mˈæɡnᵻfˌaɪ ðə skɹˈiːn zˈuːm ˈɪn, tʃˈeɪndʒ ðə bˈækɡɹaʊnd kˈʌlɚɹ ʌvðə skɹˈiːn, ɔːɹ mˌeɪk ðə mˈaʊs kˈɜːsɚɹ ɔnðə skɹˈiːn lˈɑːɹdʒɚ.