Which of the following device(s) cannot be implemented with combinational circuits? Pick all correct solutions. Read only memory ALU cache memory Register memory

Database System Concepts
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ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
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**Question:**  
Which of the following device(s) cannot be implemented with combinational circuits?  

Pick all correct solutions.

- ☐ Read only memory
- ☐ ALU
- ☐ Cache memory
- ☑ Register memory

**Explanation:**

This question focuses on understanding the implementation of various memory and logic devices using combinational circuits. Combinational circuits are logic circuits whose outputs depend only on the current inputs. Devices like ALUs and read-only memory are typically implemented using combinational logic.

However, register memory requires storage capability, which depends on sequential circuits, as they retain state based on clock cycles. Hence, register memory cannot be entirely implemented with combinational circuits.
Transcribed Image Text:**Question:** Which of the following device(s) cannot be implemented with combinational circuits? Pick all correct solutions. - ☐ Read only memory - ☐ ALU - ☐ Cache memory - ☑ Register memory **Explanation:** This question focuses on understanding the implementation of various memory and logic devices using combinational circuits. Combinational circuits are logic circuits whose outputs depend only on the current inputs. Devices like ALUs and read-only memory are typically implemented using combinational logic. However, register memory requires storage capability, which depends on sequential circuits, as they retain state based on clock cycles. Hence, register memory cannot be entirely implemented with combinational circuits.
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