▁( hard ware ▁and ▁software ▁design ▁services ; ▁October ▁ 1 9 8 7 ▁– ▁present ); ▁e V ault ▁Rem ote ▁Back up ▁Service ▁( J anu ary ▁ 1 9 9 2 ▁– ▁April ▁ 1 9 9 9 ); ▁The ▁Ch alk board ▁Network ▁( online ▁business ▁and ▁engineering ▁courses ; ▁January ▁ 1 9 9 9 ▁– ▁December ▁ 2 0 0 2 ); ▁Ze id man ▁Techn ologies ▁( software ▁tools ▁for ▁embedded ▁software ▁development ; ▁December ▁ 2 0 0 2 ▁– ▁present ); ▁Software ▁Analysis ▁and ▁For ens ic ▁Engineering ▁Corporation ▁( software ▁tools ▁for ▁intellectual ▁property ▁lit ig ation ; ▁September ▁ 2 0 0 7 ▁– ▁present ); ▁Sam An na ▁Design s ▁( f ashion ▁access ories ; ▁January ▁ 2 0 1 1 ▁– ▁present ); ▁Swiss ▁Creek ▁Publications ▁( in dependent ▁publish er ; ▁June ▁ 2 0 1 2 ▁– ▁present ); ▁F irt iva ▁( online ▁videos ▁and ▁films ; ▁December ▁ 2 0 1 3 ▁– ▁present ). ▁ ▁Ze id man ▁has ▁written ▁many ▁technical ▁papers ▁on ▁hardware ▁and ▁software ▁design ▁methods , ▁and ▁has ▁taught ▁courses ▁on ▁Ver ilog , ▁AS IC , ▁and ▁F P GA ▁design ▁at ▁engineering ▁con ferences ▁throughout ▁the ▁world . ▁He ▁is ▁the ▁author ▁of ▁five ▁engineering ▁books : ▁“ Ver ilog ▁Design er ' s ▁Library ,” ▁“ Introduction ▁to ▁Ver ilog ,” ▁“ Des ign ing ▁with ▁F PG As ▁and ▁C PL D s ,” ▁“ The