Floppy disk reading:
-
Double click computer mouse
-
Turn on, turn off the hard drive
-
The USB flash drive is inserted, removed
-
Read, room noise, Hard disk, write
-
Photocopy (photocopy)
-
Opening, closing the laptop cover
-
Read the, Insert the disk into the drive
-
Jet printer
-
Repeatedly pressing a computer mouse
-
Modem connection, interference, signal
-
Computer mouse movement
-
Computer simulated laser
★★★★★