In the realm of computer operations, the control unit plays a pivotal role in managing and executing the operations. To carry out any instruction, the control unit must create the necessary control signal in the correct sequence. Here, we delve into the two types of control units that facilitate this process: the Hardwired control unit and the Microprogrammed control unit. Let's unravel the key differences between these two.
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What is a Hardwired Control Unit?
A hardwired control is an approach to generating control signals utilising Finite State Machines (FSM) appropriately.
What is a Microprogrammed Control Unit?
A Microprogrammed control unit generates the control signals to retrieve and execute instructions. This control unit generates sequencing via microinstructions.
Which control unit is quicker?
Hardwired control unit is quicker than a microprogrammed control unit.
Which control unit is easy to modify?
Microprogrammed control unit is easier to modify compared to the hardwired control unit.
Which control unit is more expensive?
Hardwired control unit is more expensive as compared to the microprogrammed control unit.