Question
Download Solution PDFA microprogrammed control unit :
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is 2) allows easy implementation of new instructions.
- A microprogrammed control unit allows easy implementation of new instructions.
- Microprogramming involves storing control information in a memory called control memory.
- When a new instruction is needed, it can be added to the control memory without changing the hardware.
- This makes the control unit highly flexible and adaptable to new instructions or changes in instruction set architecture.
- Unlike a hardwired control unit, which requires physical changes to the wiring and circuitry, a microprogrammed control unit only requires updates to the control memory.
- Microprogrammed control units are typically used in complex instruction set computers (CISC) due to their ability to handle complex instructions efficiently.
- They provide a systematic and organized approach to control unit design.
- However, microprogrammed control units are generally slower than hardwired control units because of the additional memory access time required to fetch microinstructions.
- Despite being slower, their flexibility and ease of updating make them suitable for many applications.
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