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Compare Hard wired control unit and Microprogrammed control unit.
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| written 9.4 years ago by |
| 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 |