1: Txheem cov ntaub ntawv loj LCD, tso cov teeb tsa ntau cov ntaub ntawv ntawm ib qho screen, cov ntawv qhia zaub mov hom haujlwm interface, yooj yim to taub thiab ua haujlwm.
2: Tus kiv cua ceev kev tswj hom yog saws, uas tuaj yeem hloov kho dawb raws li kev sim sib txawv.
3: Kev tsim kho tus kheej cua sib ncig cov txheej txheem hluav taws xob tuaj yeem tso cov pa dej hauv lub thawv yam tsis muaj phau ntawv hloov kho.