Computer simulated laser:
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Franking machine
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Interference, signal, Modem connection
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Sound signal of a bios computer, bios
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Turn on, turn off the old computer
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Closes the CD / DVD tray, disc read, Opens
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Office work, general noise
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Jet printer
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Read the, Insert the disk into the drive
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Pressing a keypad, input error sound
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Floppy disk reading
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Repeatedly pressing a computer mouse
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Matrix printer
★★★★★