Question

The time required to complete one operation of accessing memory, I/O, or acknowledging an external request by a microprocessor, is known as:

• A. One Machine Cycle
• B. One Instruction Cycle
• C. One T-state
• D. One Clock period

Hint:

The machine cycle is the basic unit of time for microprocessor operations, encompassing memory access, I/O operations, or external requests.

Answer 1

The Correct Option is A

Step 1: Understand the terms. 
- **Machine Cycle:** The time required to complete one operation of accessing memory, I/O, or acknowledging an external request by the microprocessor. This is the basic unit of time used in a microprocessor for such operations. 

- **Instruction Cycle:** Refers to the cycle in which a machine instruction is fetched, decoded, and executed. 

- **T-state:** Refers to a single clock cycle of the microprocessor. 

- **Clock Period:** Refers to the time between two consecutive clock pulses.

Step 2: Conclusion. 
The correct answer is (1) One Machine Cycle, as it matches the definition provided in the question.