The PCI local bus is an advanced and high performance 32/64 bit bus with multiplexed address and data lines

which is easy to realize I/O controlling card or communication interface card under high-speed and real-time. A PCI bus controlling card based on CH365 chip is designed in this article. The card mainly consists of PCI interface chip

MCU and data buffer. At the same time

display circuit based on driver chip CH451 is designed

the circuit connected control signal of MCU. It can realize data display with fewer pins as several CH451 chips are applied by parallel connected. The experiments proved that field display is feasible based on PCI bus controlling.