WAEC - Data Processing (2016 - No. 30)
A technician can protect itself from electronic discharge by using
wrist strap
voltmeter
screw driver
magnet
Giải thích
An anti-static wrist strap is used to make sure that the voltage difference in your body and the computer is balanced out. By grounding your body with an anti-static wrist strap, any excess static charge in your body will be dissipated right away.