Hardware refers to the physical components of a computer system, such as the motherboard, processor, memory, and storage. Any computer must function properly as it provides the necessary infrastructure to run software programs. For example, computers cannot process information or store data without hardware.

The most critical component of a computer’s hardware is its central processing unit (CPU), which acts like an engine by executing instructions from software applications and controlling all other operations within a system. CPUs are typically made up of two parts: an arithmetic logic unit (ALU) that performs calculations; and control units that manage input/output devices such as keyboards or mice. Other vital components include random access memory (RAM) which stores data temporarily while programs are running; hard drives used for permanent storage; sound cards used for audio output; video cards used for graphics display on monitors or projectors; network adapters allowing communication between multiple computers over local area networks or wide area networks like the internet; printers providing printed output on paper documents etc.

Due to advances in technology, there have been many improvements in both speed and capacity of hardware components over recent years, making them more potent than ever before while also becoming increasingly smaller at the same time due to their miniaturization capabilities. This has enabled users to enjoy faster computing speeds with more excellent performance levels when using their machines compared to previous generations’ systems, thus resulting in a better overall user experience.