The computer main engine,
 the monitoring device,
 the mouse,
 the keyboard,
 the work electric appliance equipment,
 the router,
 the switchboard,
 brush on the card machine,
 the automatic money counting machine,
 the digital photographic camera,
 the palm the computer,
 ADSL,
 the electron clock,
 the electronic mechanical games,
 read the card,
 the digital camera,
 the projecting apparatus,
 move the hard disk, and so on