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Fetch Execute Cycle (Program Counter (PC) (contains addresses (stores…
Fetch Execute Cycle
Program Counter (PC)
contains addresses
stores location of next instruction
address bus
Memory Address Register (MAR)
stores location of current instruction
Memory Data Register (MDR)
stores data at location stored in MAR
data bus
Current Instruction Register (CIR)
value of PC incremented by 1
instruction decoded
control bus
1 more item...
stores current data
processor
fetches
data
and
instructions
stores in suitable
registers
address and data bus
instructions
decoded
execution
Only von Neumann