The Ricoh R5C832 is a multi-function chip commonly used in laptop computers. It integrates several functions into a single chip, including a card reader controller, a PCI bus interface, and a IEEE 1394 (FireWire) controller.

The card reader controller supports various types of memory cards, such as SD, MMC, Memory Stick, and xD-Picture Card. This allows users to conveniently access and transfer data from these memory card formats.

The PCI bus interface enables the chip to communicate with other hardware devices connected to the laptop, such as network adapters, sound cards, and graphics cards.