Radio, radio cassette, televisi, tape recorder, amplifier, ìpower ampli, loudspeaker, speaker box, VCD, video,mesin bicara, ìgramaphone, pickup, rewinder, microphone, megaphone, headphone, ìwireless, optik, kaca mata, lensa - lensa, mikroskop, teropong, ìteleskop, pesawat komunikasi, telephone, airphone, walky talky, ìhandy talky, pesawat telex, pita-pita magnetik, pita cassette, ìpita video disk recorder, laser disk, piringan hitam, compact ìdisk (audio, video),antena,booster,radar,parabola,accu,baterai, ìbatu baterai, bel listrik, kabel telepon, transformator, travo, ìballast, step up, step down, mesin faksimili, komputer, mesin ìhitung, kalkulator, kas register, mesin teleks,printer,pesawat- ìpesawat ukur, spedometer, ampere meter, meteran listrik, volta ìmeter, modem-modem, monitor (program komputer),CPU,stop kontak, ìsakelar, switch-switch, fiting-fiting,kombinasi fiting,stecker, ìsonar, seterika listrik, mesin fotocopy, disket,pesawat-pesawat ìpemadam api, alat solder listrik, alat fotografi, kamera