A computer system is comprised of at least one of a main bus and an attached expansion bus, a CPU connected to the main bus, peripherals connected to one of the main bus or to the expansion buses, a subsystem connected to a bus for receiving control, address and data signals from the CPU...http://www.google.com.tw/patents/US5796960?utm_source=gb-gplus-share專利 US5796960 - Multi-media computer architecture
