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  • The control function specifying a micro-operation is a binary variable whose active state could be either 1 or 0.

            – In the variable’s active state, the microoperation is executed.

            – The string of control variables which control the sequence of microoperations is called a control word.

  • The microoperations specified in a control word is called a microinstruction.

            – Each microinstruction specifies one or more microoperations that is performed.

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