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All the auditory and visual signals humans use to transmit messages, either directly or through channels and equipment.
typography, public postal network, photography, television, sound reproducing system, wireless communication, communication by telephone, writing instruments, newspaper, diacritic symbols, miscellaneous symbols, punctuation marks, broadcast satellite communication, telecommunications by satellite, telecommunication satellites, radio: studio and control room, dynamic microphone, mini stereo sound system, portable sound systems
The electronic, computer and telecommunications technologies that are applied to office work.
office furniture, personal computer, examples of networks, computer network, laptop computer, stationery, office, input devices, output devices, uninterruptible power supply (UPS), data storage devices, communication devices, Internet, Internet uses, electronic book, handheld computer