, kaca mata, r iensa-Iensa, mikroskop, teropong, teleskop, pesawat komunikasi, telephone, aiiphone, walky talky, handi talky, pesawat telex, pita-pita magnetik, pita cassette, pita video disk recorder, laser disk, piringan hitam, compact disk (audio, video), antena, booster, radar, parabola, accu, baterai, Batu baterai, bel listrik, kabel telepon, transformator, ballast, stepup, step down, mesin faksimili, komputer, mesin hitung, kalkulator, kas register, mesin teleks) printer pesawat-pesawat ukur, spedometer, ampere leter, meteran listrik, volta meter, mojem-modem, monitor (program komputer), cpu, stop kontak, sakelar, switch-switch, firing-fiting, kombinasi flting, stecker, sonar, seterika listrik, mesin fotocopy, disket, pesawat-pesC\wat oernadam pi, alat solder listrik, alat fotografi, kamera, lensa kotak, antena tv/radio, Travo, UPS, inverter (travo ), stabilizer (power starting, speaker active, radio, radio cassette, amplifier, power ampli, loudspeaker, speaker box, compact disc player, VCD player, DVD player laser disc player, VCD, DVD, LCD, kaset, pesawat penerima CJ radio, televisi, tape recorder, video, mesin bicara, gram~phone, pickup, rewinder, dmplifier, microphone, megarhO,lE:, headphonewireless, vcd, opti