Question

what is 1/0 controller ​

Answer 1

I/O Controller Hub (ICH) is a family of Intel southbridge microchips used to manage data communications between a CPU and a motherboard, specifically Intel chipsets based on the Intel Hub Architecture. It is designed to be paired with a second support chip known as a northbridge.

Answer 2

I/O controllers are a series of microchips which help in the communication of data between the central processing unit and the motherboard. The main purpose of this system is to help in the interaction of peripheral devices with the control units (CUs). Put simply, the I/O controller helps in the connection and control of various peripheral devices, which are input and output devices. It is usually installed on the motherboard of a computer. However, it can also be used as an accessory in the case of replacements or in order to add more peripheral devices to the computer.

I/O controllers are also known as channel I/O, DMA controllers, peripheral processors or I/O processors.