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📝 Data Bus in Microprocessor System

📖 From An Introduction To Microprocessor 8085 • 1. Evolution and History of Microprocessors • 7 questions available

Practice MCQs for Data Bus in Microprocessor System. Test your knowledge with carefully crafted questions across easy, medium, and hard difficulty levels.

🔄 Last updated: 2026-07-30

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Easy Questions
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Medium Questions
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Hard Questions

📝 Sample Questions

Q1. What is the primary function of a data bus in a microprocessor system?

🔹 A. Transfer data between the CPU, memory, and I/O devices
🔹 B. Provide timing and control signals for synchronization
🔹 C. Store program code and constants
🔹 D. Select memory addresses for read/write operations

💡 Difficulty: easy | ✅ Correct: A

Q2. How does increasing the width of a data bus affect the data transfer rate of a microprocessor?

🔹 A. It allows more bits to be transferred each clock cycle, raising overall bandwidth
🔹 B. It reduces the clock frequency required for the same throughput
🔹 C. It changes the voltage levels needed for signaling
🔹 D. It increases the number of addressable memory locations

💡 Difficulty: medium | ✅ Correct: A

Q3. A system uses a 16‑bit data bus to transfer a contiguous 64 KB block of data from memory to a peripheral. How many bus cycles are required to move the entire block, assuming each cycle transfers the full bus width?

🔹 A. 16,384 cycles
🔹 B. 32,768 cycles
🔹 C. 65,536 cycles
🔹 D. 128,000 cycles

💡 Difficulty: hard | ✅ Correct: B

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🔗 Related Topics

📝 Introduction to Microprocessors📝 Evolution and History of Microprocessors📝 Basic Microprocessor System📝 Address Bus in Microprocessor System📝 Control Bus in Microprocessor System
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