略語大辞典 [C] 28 PCR port control register (コンピュータの)ポート制御レジスタ.port control register; a control register in a micro computer system; e.g. in 71055 PPI(programmable peripheral interface) for Z80 CPU(central processing unit) or 64180 CPU; [C:E:Mech]. 丸善「略語大辞典」JLogosID : 11855140