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The basic operations performed by MPU are under as follows: (1)Memory Read (2)Memory Write (3)Input/Output Read (4)Input/Output Write
If you are asking in terms of computers then an operation is performed on an operand.
An operation which when performed multiple times, has no further effect on Its subject after the first time it is performed. - Nacolepsy
An active operation is one that is currently being performed.
Examples: * [] -> = ==,<=,<,!=,>=,> +,+=,-,-=
What exactly do you mean by a 'read operation'; the question is missing the semantics of what you want to accomplish.
Is an operation.
no operation is not performed
I will like to read material on operation planning and control
function rule
in any of the microprocessor include sequencer that sequencer send control signal to the memory and processor to do specific operation like read or write operation
When undertaking a write operation the read/write head usually has to use more power during a write operation as this operation must effect a change of state in the storage medium. On the read operation the read/write head merely has to detect this changed state.