For the safety of computer equipment, for schools or other units with conditions, when using computers collectively, anti-static flooring must be laid in the computer classroom, and ordinary chemical fiber carpets must not be used. The power supply used by computer equipment must have a well grounded ground wire. It is recommended to use a three pin power outlet, and of course, the power cord must also be a three pin one. Some friends use a wire to connect the exterior of the computer case to the ground or the water pipe, but this method cannot achieve good results.