Dị ka eriri nnyefe mgbaàmà na ngwa mmepụta ihe. Ha nwere ike na-adị mfe na-eji ha na-agbanwe ewu na warara ngwa dị ka Electronic Control Systems of Audio ma ọ bụ Computer Systems ma ọ bụ na Communication Sector, Electronic sekit, Measurement Devices, Machine Design, Office Equipment wdg The screening na-echebe eriri si mpụta electromagnetic nnyonye anya.