2 ▁was ▁never ▁manufact ured ▁or ▁brought ▁to ▁market . ▁ ▁Though ▁a ▁much ▁simpler ▁chip ▁than ▁the ▁U M 1 , ▁getting ▁the ▁U M 2 ▁into ▁manufact uring ▁was ▁difficult ▁because ▁any ▁f law ▁in ▁timing , ▁even ▁once ▁in ▁millions ▁of ▁cycles , ▁could ▁bring ▁the ▁entire ▁system ▁down . ▁ ▁The ▁mask s ▁used ▁to ▁create ▁the ▁propriet ary ▁ch ips ▁were ▁drawn ▁by ▁hand . ▁ ▁The ▁company ▁tested ▁its ▁ch ips ▁using ▁its ▁own ▁ste pper ▁and ▁chip ▁test er . ▁ ▁Hard ware ▁and ▁system ▁design ▁ ▁Like ▁the ▁later ▁Apple ▁Mac Int osh , ▁the ▁Video Brain ▁did ▁not ▁allow ▁the ▁user ▁to ▁open ▁the ▁case ▁and ▁insert ▁hardware ▁components . ▁ ▁Like ▁the ▁Com mod ore ▁P ET ▁the ▁keyboard ▁was ▁built ▁into ▁the ▁computer . ▁ ▁T aking ▁a ▁less on ▁from ▁vide og ames , ▁Video Brain ▁was ▁the ▁first ▁home ▁or ▁personal ▁computer ▁where ▁software ▁programs ▁were ▁stored ▁on ▁R OM ▁ch ips ▁and ▁loaded ▁into ▁the ▁system ▁in ▁cart rid ges . ▁ ▁This ▁was ▁much ▁easier ▁and ▁more ▁reliable ▁for ▁consum ers ▁than ▁loading ▁software ▁from ▁c ass ette ▁t apes ▁or ▁the ▁not or iously ▁fal li ble ▁ 5 . 2 5 ” ▁disk ettes . ▁ ▁In ▁addition ▁to ▁the ▁F 8 ▁processor ▁and ▁the ▁propriet ary ▁ch ips , ▁the ▁system ▁contained ▁ 1 K ▁of ▁RAM ▁and ▁ 1 K ▁of ▁resident ▁software ▁on ▁R OM . ▁ ▁Though ▁the ▁computer ’ s ▁capabilities