Photocopy (photocopy):
-
Double click computer mouse
-
Old computer keyboard
-
Interference, signal, Modem connection
-
Hard disk, write, read, room noise
-
Photocopy (photocopy)
-
Computer simulated laser
-
The USB flash drive is inserted, removed
-
Computer noise, Communication room
-
Turn off the old computer, Turn on
-
Computer interface, signals
-
Office work, general noise
-
Repeatedly pressing a computer mouse
★★★★★