BUSSES Flashcards
Learn the function of the Busses in the CPU
What is a bus
a collection of wires through which data is transferred.
The speed of a bus is measured in
megahertz
The size of a bus is also known as
its width
Bus size refers to…
How many bits it can transfer at a time.
Unidirectional
Data moves in one direction
bidirectional
data moves in both directions
What is the function of the address bus
sends a memory address from the CPU to the memory (To fetch data the CPU needs to tell the RAM the location of the data)
The address bus is
unidirectional
What is the function of the data bus
sends the actual data to and from the memory and CPU
Data bus is
bidirectional
What is the function of the control bus
Tramsfers signals from the control unit to and from the CPU and other hardware devices
Control bus is
bidirectional
