Given below are two statements: Statement 𝐼: Hardwired control unit can be…
2020
Given below are two statements:
Statement 𝐼: Hardwired control unit can be optimized to produce fast mode of operation
Statement 𝐼𝐼: Indirect addressing mode needs two memory reference to fetch operand
In the light of the above statements, choose the correct answer from the options given below
- A.
Both Statement 𝐼 and Statement 𝐼𝐼 are true
- B.
Both Statement 𝐼 and Statement 𝐼𝐼 are false
- C.
Statement 𝐼 is correct but Statement 𝐼𝐼 is false
- D.
Statement 𝐼 is incorrect but Statement 𝐼𝐼 is true
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Correct answer: A
Answer: Both statements are true.
Statement I: Hardwired control units implement control signals using fixed combinational logic. Because the control logic is specialized rather than interpreted, it can be optimized for speed (shorter signal paths and fewer cycles), so this statement is true.
Statement II: In indirect addressing the instruction contains the address of a memory location that itself holds the operand's address. You must first read the memory location to get the operand address, and then read memory again to fetch the operand, so two memory references are required.
Therefore, both statements are correct.
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