📝 Control Bus in Microprocessor System

Q1. What primary purpose does the control bus serve in a microprocessor system?

💡 Difficulty: easy | ✅ Correct: C

Q2. A designer connects a microprocessor to RAM and needs to ensure the processor can signal a read operation. Which control bus line must be asserted to initiate the read cycle?

💡 Difficulty: medium | ✅ Correct: B

Q3. In a system where the microprocessor shares the data bus with an I/O device, a designer must prevent bus contention during a write operation. Which combination of control‑bus signals should be used to safely allow the processor to write data while keeping the I/O device from driving the bus?

💡 Difficulty: hard | ✅ Correct: B