Pesawat televisi, tape recorder, video, VCD, DVD, mesin ìbicara, gramaphone, pickup, rewinder, amplifier, loud speaker, ìspeaker mobil, microphone, megaphone, headphone, wireless, ìoptik, kaca mata, lensa-lensa, mikroskop, teropong, teleskop, ìpesawat komunikasi, telephone,airphone,walky talky,handy talky, ìpesawat telex, pita-pita magnetik, pita cassette, pita video ìdisk recorder, laser disk,piringan hitam, antena,booster,radar, ìparabola, accu, baterai,batu baterai,bel listrik,kabel telepon, ìtransformator, travo, ballast, stepup, stepdown, mesin faksi- ìmili, komputer, mesin hitung, kalkulator, kas register, mesin ìteleks, printer, pesawat - pesawat ukur, speedometer, ampere ìmeter, meteran listrik,volta meter,modem-modem,monitor (program ìkomputer), cpu, stop kontak, sakelar, switch-switch, fiting- ìfiting,kombinasi fiting, stecker, sonar, seterika listrik,mesin ìfotocopy, disket