Why do different devices generally not have the same interrupt?

Different devices generally do not have the same interrupt because each device is designed to perform specific functions and requires unique signaling to communicate with the processor. Interrupts are used to alert the CPU to important events, and assigning distinct interrupt requests (IRQs) helps prevent conflicts and ensures that the CPU can efficiently manage multiple devices simultaneously. Additionally, different devices may have varying priorities and characteristics, necessitating a tailored interrupt system to optimize performance and responsiveness.