Von Neumann Architecture Flashcards
Where does the data start in an FDE cycle?
Program Counter
Why is the PC set to :0 ?
0 is the first address
What does the control bus do?
Carries control instructions issued by the control unit
Where does the PC go next?
Memory Address Register
On what bus is the instruction sent?
Address Bus
The instructions go on the data bus to where?
Control Unit
What does the MDR hold?
Data
Where is the memory location loaded into?
The Accumulator
What does the accumulator do?
Temporarily stores data
Where does data go from the ALU?
Accumulator
Where does the address go?
Memory Address Register
Where does the address end up after MAR?
Memory Data Register
What does the control unit do?
. Decodes the instruction
. Controls where it goes
What does the Memory Address Register do?
Hold the address of the current data or instruction
What does the Memory Data Register do?
Holds the data from the memory that is currently in use
