Turning on the computer, fan noise, shutting down:
-
Signal, interference, Modem connection
-
Computer interface, signals
-
Insert the disk into the drive, read the
-
General noise, Office work
-
Shutting, Turning on the computer, fan noise
-
Write, room noise, Hard disk, read
-
The USB flash drive is inserted, removed
-
Repeatedly pressing a computer mouse
-
Old computer keyboard
-
Laser printer
-
Double click computer mouse
-
Signal read information, Computer interface
★★★★★