Khui-ki sī chí khí-tōng chi̍t-ê tiān-náu hē-thóng. Thoân-thóng siōng khui-ki ê hong-sek hun nn̄g-sek kap nńg-sek nn̄g khoán, ngē-sek sī chí phah khui tiān-goân; nńg-sek sī tiān-goân í-keng phah-khui ê chêng-hêng hā têng-sin khí-tōng.

Khui-ki chāi-thé (Eng-gí: boot loader) sī chi̍t khoán tiān-náu thêng-sek, ē tī khui-ki ê khui-tiān chū-ngó͘ chhì-giām (power-on self-test) têng-sū liáu-āu chāi ji̍p chok-gia̍p hē-thóng.