Computer simulated laser:
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Pressing a keypad, input error sound
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Closes the CD / DVD tray, Opens, disc read
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Read the, Insert the disk into the drive
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Matrix printer
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Manual copy machine
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Computer keyboard
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Shutting, fan noise, Turning on the computer
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Old computer keyboard
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Turn off the old computer, Turn on
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Bios, Sound signal of a bios computer
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Disc read, CD / DVD drive
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Turning on the laptop, shutting, fan noise
★★★★★