Describe Von Neumann Machine. Differentiate Hardwired control unit and micro-programmed control unit.
Difference between Hardwired and Microprogrammed Control Unit
| S.No. | Hardwired Control Unit | Microprogrammed Control Unit |
|---|---|---|
| 1. | The hardwired control unit induces the control signals required for the processor. | The microprogrammed control unit induces the control signals through microinstructions. |
| 2. | Hardwired control unit is quicker than a microprogrammed control unit. | Microprogrammed control unit is slower than a hardwired control unit. |
| 3. | It is hard to modify. | It is easy to modify. |
| 4. | It is more expensive as compared to the microprogrammed control unit. | It is affordable as compared to the hardwired control unit. |
| 5. | It faces difficulty in managing the complex instructions because the design of the circuit is also complex. | It can easily manage complex instructions. |
| 6. | It can use limited instructions. | It can generate control signals for many instructions. |