Turn on, turn off the hard drive:
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Pressing a keypad, input error sound
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Bios, Sound signal of a bios computer
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Franking machine
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Computer mouse movement
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Jet printer
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Signals, Computer interface
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Turn on, turn off the hard drive
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Shutting, fan noise, Turning on the computer
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Laser printer
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Hard disk, write, room noise, read
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Turn on, turn off the old monitor
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Old computer keyboard
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