Introduction:
A computer is an electronic device that is susceptible to various types of damage. Protecting a computer from potential hazards is crucial to ensure its optimal performance and longevity. Two common threats that can cause significant harm to a computer are dust and liquid items. Therefore, protecting a computer from both dust and liquid items is essential.

Dust:
Dust is one of the most common and harmful substances that can enter a computer. When dust accumulates inside a computer, it can block the airflow and cause overheating. Over time, the accumulation of dust can lead to the malfunctioning of various components, such as the cooling fans, causing the computer to overheat and potentially damage sensitive electronic parts. Dust particles can also interfere with the connections between different components, resulting in poor performance or even complete system failure. Hence, protecting a computer from dust is crucial to maintain its functionality and prevent potential damage.

Liquid Items:
Liquid items, such as water or any other type of liquid, pose a significant threat to a computer's functionality. If liquid spills onto a computer or its components, it can cause immediate damage. Liquid can short-circuit the sensitive electronic circuits and components, leading to irreversible damage. The liquid can also corrode the metal parts and cause rusting, which can further deteriorate the computer's performance and functionality. Protecting a computer from liquid items is vital to prevent any accidental spills or water damage.

Light:
In contrast to dust and liquid items, light does not directly harm a computer. However, prolonged exposure to direct sunlight or intense light can cause damage indirectly. Excessive heat generated by intense light can overheat the computer and its components, resulting in malfunctions or even permanent damage. Additionally, UV rays present in sunlight can cause discoloration and fading of the computer's external components, such as the plastic casing. Therefore, it is advisable to protect a computer from direct sunlight or intense light to prevent any potential damage.

Conclusion:
To ensure the optimal performance and longevity of a computer, it is crucial to protect it from potential hazards such as dust and liquid items. Dust can block airflow and interfere with connections, while liquid items can cause immediate damage and corrosion. While light does not directly harm a computer, prolonged exposure to intense light or direct sunlight can lead to overheating and discoloration. Therefore, protecting a computer from both dust and liquid items is essential for its proper functioning and longevity.