Computer software for collecting, processing and transmitting data and information in the field of healthcare, computers, sound and video level meters and mixers; sound and video cards, sheets, tapes, hard drives; sound and video recording and playback machines; receivers, computer, TV and video monitors, headsets for use with computers, radios, TVs and mobile phones, audiovisual receivers for reproduction of sound and video signals; amplifiers, cables and fibres for the transmission of sound...