▁the ▁Cu pert ino , ▁California ▁home ▁of ▁the ▁H P ▁ 3 0 0 0 ▁business ▁computers ▁( the ▁division ▁was ▁later ▁renamed ▁Computer ▁Systems ▁Division ▁C SY ). ▁Later , ▁the ▁H P 3 0 0 ▁design ▁team ▁developed ▁multi - user ▁ab ilities , ▁and ▁an ▁ahead ▁of ▁its ▁time ▁inter - unit ▁processor ▁inter connect ▁that ▁let ▁one ▁H P 3 0 0 ▁change ▁registers ▁in ▁other ▁inter - connected ▁H P 3 0 0 ' s ▁system . ▁ ▁Fe atures ▁The ▁circuit ▁bo ards ▁were ▁in ▁a ▁floor ▁ped est al ▁box , ▁with ▁C RT ▁on ▁top ▁with ▁built - in ▁soft ▁keys , ▁and ▁fixed ▁keyboard ▁pro tr ud ing ▁in ▁front . ▁It ▁pione ered ▁such ▁ideas ▁as ▁built - in ▁networking , ▁automatic ▁sp elling ▁correction , ▁multiple ▁windows ▁( on ▁a ▁character ▁based ▁screen ), ▁and ▁labels ▁adjacent ▁to ▁vert ically ▁stack ed ▁user ▁function ▁keys , ▁now ▁used ▁on ▁AT M s ▁and ▁gas ▁p umps . ▁The ▁H P 3 0 0 ▁featured ▁H P - IB ▁( l ater ▁IE EE - 4 8 8 ) ▁interface ▁( IF ) ▁as ▁the ▁I / O ▁bus , ▁an ▁ 8 " ▁flo ppy ▁disk , ▁and ▁a ▁built - in ▁fixed ▁ 1 2 M ▁hard ▁drive . ▁Later ▁drivers ▁for ▁H P 7 9 7 0 E ▁t ape ▁drive ▁allowed ▁for ▁easier ▁H P 3 0 0 ▁system ▁back ▁ups . ▁It ▁also ▁had ▁a ▁native ▁system