Given below are two statements: Statement š¼: Hardwired control unit can beā¦
2020
Given below are two statements:
StatementĀ š¼: Hardwired control unit can be optimized to produce fast mode of operation
StatementĀ š¼š¼: 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 StatementĀ š¼Ā and StatementĀ š¼š¼Ā are true
- B.
Both StatementĀ š¼Ā and StatementĀ š¼š¼Ā are false
- C.
StatementĀ š¼Ā is correct but StatementĀ š¼š¼Ā is false
- D.
StatementĀ š¼Ā is incorrect but StatementĀ š¼š¼Ā 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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