Opening, closing the laptop cover:
-
Bios, Sound signal of a bios computer
-
Repeatedly pressing a computer mouse
-
Manual copy machine
-
Floppy disk reading
-
Office work, general noise
-
The USB flash drive is inserted, removed
-
Matrix printer
-
Double click computer mouse
-
Turn off the old monitor, Turn on
-
Typewriter, Office work, environmental sounds
-
Opening, closing the laptop cover
-
Signal, Modem connection, interference
★★★★★