▁business , ▁and ▁the ▁Information ▁Systems ▁division ▁developed ▁the ▁PC - 9 8 0 1 ▁for ▁business . ▁In ▁ 1 9 8 3 , ▁N EC ▁had ▁four ▁personal ▁computer ▁lines ▁come ▁out ▁from ▁different ▁divisions . ▁To ▁avoid ▁conflic tion , ▁they ▁decided ▁to ▁cons olid ate ▁personal ▁computer ▁business ▁into ▁two ▁divisions ; ▁N EC - HE ▁de alt ▁with ▁the ▁ 8 - bit ▁home ▁computer ▁line , ▁and ▁the ▁Information ▁Systems ▁division ▁de alt ▁with ▁the ▁ 1 6 - bit ▁personal ▁computer ▁line . ▁N EC - HE ▁dis cont in ued ▁development ▁of ▁the ▁PC - 6 0 0 0 ▁series , ▁the ▁PC - 6 6 0 0 ▁series , ▁and ▁the ▁PC - 8 0 0 0 ▁series . ▁They ▁were ▁merged ▁to ▁the ▁PC - 8 8 0 0 ▁series . ▁ ▁PC - 6 0 0 1 ▁▁ ▁The ▁PC - 6 0 0 1 ▁has ▁the ▁ µ PD 7 8 0 ▁processor ▁( NE C ▁clone ▁of ▁Z ilog ▁Z 8 0 ), ▁ 1 6 ▁K B ▁RAM ▁( up ▁to ▁ 3 2 ▁K B ), ▁General ▁Inst rument ▁A Y - 3 - 8 9 1 0 ▁ 3 - voice ▁sound ▁generator , ▁a ▁R OM ▁Cart ridge ▁conne ctor , ▁a ▁c ass ette ▁t ape ▁interface , ▁ 2 ▁x ▁jo yst ick ▁port , ▁a ▁parallel ▁printer ▁conne ctor , ▁an ▁R F ▁mod ulator ▁output ▁and ▁a ▁composite ▁video ▁output . ▁It