Draw the connection between the processor and the main memory and explain the basic operations.
Connection between the processor and the main
memory:
(i) PC: Program counter contains the memory address
of the instruction to be executed.
(ii) MAR: Memory address register holds the address
of the location to or from which data are to be transferred.
(iii) MDR: Memory data register contains the data to
be written or read out of the address location.
(iv)IR: The instruction register contains the
instruction that is being executed.
(v)ALU: ALU is the part of the computer which
performs different basic operation and arithmetic calculation.
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