Final answer:
True. Computer keyboard failures can be caused by both electrical and mechanical defects.
Step-by-step explanation:
True. Computer keyboard failures can indeed be attributed to both electrical and mechanical defects. Electrical defects can occur when there is a problem with the circuitry or connectivity of the keyboard, such as a loose wire or a malfunctioning key switch. Mechanical defects, on the other hand, can happen due to physical damage or wear and tear of the keyboard, such as broken keys or sticking switches. For example, if a key on the keyboard is not working, it could be due to an electrical defect like a broken circuit connection or a mechanical defect like a stuck key switch.