OHCI (Open Host Controller Interface)

OHCI (Open Host Controller Interface) is a standard that defines how a computer's operating system communicates with its USB (Universal Serial Bus) hardware. It acts as a set of rules so that different devices and software can reliably send and receive data through USB ports, such as keyboards, mice, or external drives. Essentially, OHCI ensures that the computer's software and hardware work together smoothly to manage multiple USB devices efficiently, providing a consistent way for data to be transferred without needing to understand the specific details of each device.