Machines require energy, typically in the form of electricity, fuel, or mechanical input, to operate. This energy is converted into the various forms needed for the machine’s specific function, such as mechanical work, heat, or electrical output. Machines also rely on proper maintenance, including lubrication and periodic checks, to ensure optimal performance and longevity. Additionally, machines often require input materials or resources, depending on their purpose—whether raw materials for manufacturing machines or data for computing devices. An understanding of the machine’s design and operating principles is crucial for efficient use, and some machines may need human control or programming to function effectively.