Ọzụzụ efu: Ị nwere ike izipu ndị ọrụ gị nwere ụfọdụ ihe ọmụma nke ngwá electronic na ụlọ ọrụ anyị na anyị ga-enye ọzụzụ n'efu banyere otu esi edozi, na-edozi ma mezie ihe ngosi ahụ, ihe ngosi LED n'èzí, ihuenyo LED, bọọdụ mgbasa ozi LED.Nkwado nka na ụzụ: Anyị nwere ike izipu injin anyị...
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