ESD (Electrostatic Discharge) is one of the main enemies of electronic devices.

Let's see the ESD sources for ICs on PCB (printed circuit board).
ESD or electrostatic discharge can create serious problems in functioning of PCBs. Charged boards as well as personnel may create ESD problems that can become quite serious for the integrated circuits (ICs) that are mounted on the PCB. ESD can impact ICs and the completed equipment like computers having the ICs.