Responsible for providing serial, parallel interface and floppy disk drive control interface. I\/O chip in the 486 grade motherboard, the board has I\/O control circuit.
Chipset (Chipset) is the core component of the motherboard, which almost determines the function of the motherboard, which affects the performance of the entire computer system. According to the different arrangement position on the motherboard, it is usually divided into north bridge chip and south bridge chip. Northbridge chip provides support for CPU type and frequency, memory type and maximum capacity, ISA\/PCI\/AGP slot, ECC error correction, and so on.
The Southbridge chip provides support for KBC (Keyboard controller), RTC (Real-time Clock controller), USB (Universal Serial Bus), Ultra DMA\/33 (66) EIDE data transfer mode and ACPI (Advanced Energy Management). Among them, the North Bridge chip plays a leading role, also known as the Host Bridge.