Instruction Register
In
computing
, an
instruction register
is the part of a
CPUs
control unit
that stores an instruction. The
bits
of the instruction register are decoded by a
microprogram
that controls the
computer
. .It comes into play during FETCH operation.MAR is loaded with contents of PC.Then the memory is interrogated and the contents are stored in IR by MDR. Ravi jain and v.sridhar
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