Rangarira ndima iri pasi apa uye ipapo pindura mubvunzo gare gare mumutauro mumwe chetewo sechikamu:  Kupfuura: Dzidziso yemafirita emuchina yakatanga kushandiswa kuvandudza zvikamu zvemafonograph muma1920. Pakazosvika ma1950 mafirita omuchina akanga achigadzirwa sezvikamu zvekuzvimiririra zvekushandisa mumaradio transmitter uye vanogamuchira yepamusoro-soro. "Chikamu chemhando yepamusoro", Q, icho michina inonzwika inogona kuwana, yakakwirira zvikuru kupfuura iyo yedunhu remagetsi LC, yakaita kuti zvibvire kugadzirwa kwemafirita emagetsi ane kusarudzwa kwakanaka kwazvo. Kusarudza kwakanaka, kuva kunokosha mumagamuchiri eredhiyo, kwakaita kuti mafirita akadaro ave anokwezva zvikuru. Vanzveri vemazuva ano vari kushanda pamafirita e microelectromechanical, michina inowirirana nematanho akabatanidzwa emagetsi.  Mubvunzo: Chishandisoi icho ichi chakashandisirwa pakutanga?
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