The method that is used to transfer information between internal storage and external I/O devices is known as I/O interface. … There exists special hardware components between CPU and peripherals to supervise and synchronize all the input and output transfers that are called interface units.

What is the function of I O interface?

The main purpose of the I/O interfaces is to transmit and receive data; however, the portion designated as an I/O interface may contain additional resources, such as voltage translators, registers, impedances, and buffers.

What is I O control method?

The programmed I/O method controls the transfer of data between connected devices and the computer. Each I/O device connected to the computer is continually checked for inputs. Once it receives an input signal from a device, it carries out that request until it no longer receives an input signal.