Computer interface, alarm:
-
Environmental sounds, Office work, typewriter
-
Matrix printer
-
Manual copy machine
-
Opens, closes the CD / DVD tray, disc read
-
Read the, Insert the disk into the drive
-
Turn on, turn off the old monitor
-
Closing the laptop cover, Opening
-
CD / DVD drive, disc read
-
Opens, closes the CD / DVD tray
-
Interference, Modem connection, signal
-
Double click computer mouse
-
Removed, The USB flash drive is inserted
★★★★★