I/O BUS Vs. MEMORY BUS;
Functions of Buses
MEMORY BUS is for information transfers between
CPU and the Memory
I/O BUS is for information transfers between CPU
and I/O devices through their I/O interface
Physical Organizations
Many computers use a common single bus system for both memory and I/O interface units
Use one common bus but separate control lines for each function
Use one common bus with common control lines for both functions