Backplane bus
Type of bus
• process0r - memory bus(short , high speed)
• I/o bus (long, allows many type of devices)
• backplane bus (connects to I/o, processor,
memory)
• Synchronous bus
synchronized with the clock rate
=> mouse, key board
• Asynchronous bus
use handshaking protocol to enforce timing
example of reading word from data
=> ethernet card, network communication, printer,
*Asynchronous Protocol better support a wider variety of
devices