<prompt> Rangarira ndima iri pasi apa uye ipapo pindura mubvunzo gare gare mumutauro mumwe chetewo sechikamu: Passage: National Television System Committee yakagadzwa muna 1940 neUnited States Federal Communications Commission FCC kugadzirisa kukakavadzana pakati pemakambani pamusoro pekuiswa kwehurongwa hwese hweanalogog terevhizheni muUnited States. Muna March 1941, komiti yacho yakabudisa mutemo wehunyanzvi weterevhizheni yevatema nevatema uyo wakavakirwa pakurudziro ya1936 yakaitwa neRadio Manufacturers Association RMA. Kufambira mberi mune zvokugadzirwa kwezvinhu kwakatenderedza nzira yebhendi yepadivi yakabvumira mukana wekuwedzera chisarudzo chemufananidzo. NTSC yakasarudza mitsara ye525 yekuongorora sechisungo pakati peRCAs 441-scan line standard yatove kushandiswa neRCAs NBC TV network uye chishuwo chaPhilco naDuMont chekuwedzera huwandu hwemitsara yekuongorora kusvika pakati pe605 ne800. Chiyero chacho chakakurudzira chimiro chemafirimu 30 mifananidzo pasekondi, chinoumbwa neminda miviri yakasanganiswa pachimiro chimwe nechimwe pamitsetse 262.5 pachivako chimwe nechimwe uye minda 60 pasekondi. Mimwe mitemo iri murugwaro rwekupedzisira yaiva nechikamu che 4:3, uye frequency modulation FM yechiratidzo chezwi iyo yakanga iri itsva panguva iyoyo. Mubvunzo: NTSC yakasarudza mitsetse yokunzvera yakawanda sei sokubvumirana pane zvisina kufanira?  <response>: Makumi mashanu nemashanu 