Different between Hard wired control unit and Microprogrammed control unit.

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Hardwired control unit
Microprogrammed control unit
1) Speed is fast.
1) Speed is slow.
2) More costlier.
2) Cheaper.
3) Occurrence of error is more
3) Occurrence of error is less
4) Control functions implemented in hardware
4) Control functions implemented in software
5) Not flexible to accommodate new system specification or new instruction redesign is required.
5) More flexible to accommodate new system specification or new instructions.
6) Difficult to handle complex instruction sets.
6) Easier to handle complex instruction sets
7) Complicated design process.
7) Orderly, systematic and simple design process.
8) Complex decoding and sequencing logic.
8) Easier decoding and sequencing logic
9) More chip area.
9) Less chip area.
10) Application:
Mostly RISC microprocessor.
10) Application:
Mainframes some microprocessors
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