The device in a computer graphics system which converts the digital instructions of the computer into the analog voltages which control the CRT. Most DPUs have an enhanced processing capability which relieves the CRT from most of the computation involved in graphic displays.; 在計(jì)算機(jī)圖形系統(tǒng)中,把計(jì)算機(jī)數(shù)字指令轉(zhuǎn)換為控制陰極射線管(CRT)的模擬電壓的設(shè) 備。大多數(shù)顯示處理部件都有增強(qiáng)的處理能力,使得CRT擺脫了圖形顯示中的大部分計(jì)算。