Muhupenyu hwezuva nezuva, tinowanzo kanganwa zvinhu zvinoita kuti mabasa edu ave akapfava, akarongeka, uye anofadza. Pakati pemagamba aya asingakudzwe pane Duplex Board - bhodhi remapepa rinoshandisika, rakasimba, uye rinodhura zvishoma rave chikamu chakakosha chezvigadzirwa zvakawanda zvatinoshandisa zuva nezuva. Kusiyana nepepa rine jira rimwe chete, Duplex Board ine chimiro chine jira mbiri (hwaro hwepasi + jira repamusoro), ichibatanidza kusimba uye kudhindwa kwakanaka, zvichiita kuti ive sarudzo yakanaka yezvigadzirwa zvemaindasitiri uye zvinotarisana nevatengi pasi rese.