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📝 Performance Criteria for D/A Converter in 8085 Microprocessor

📖 From An Introduction To Microprocessor 8085 • 13. Interfacing Data converters: A/D and D/A Converters • 14 questions available

Practice MCQs for Performance Criteria for D/A Converter in 8085 Microprocessor. Test your knowledge with carefully crafted questions across easy, medium, and hard difficulty levels.

🔄 Last updated: 2026-07-30

3
Easy Questions
7
Medium Questions
4
Hard Questions

📝 Sample Questions

Q1. A system requires a D/A converter that can produce an output step size no larger than 0.1% of the full‑scale voltage. Which minimum resolution in bits satisfies this requirement?

🔹 A. 8 bits
🔹 B. 10 bits
🔹 C. 12 bits
🔹 D. 14 bits

💡 Difficulty: easy | ✅ Correct: B

Q2. A motor‑control loop uses a 12‑bit D/A converter with a specified settling time of 5 µs. If the control algorithm updates the output every 8 µs, will the converter meet the timing requirement?

🔹 A. Yes, because 5 µs < 8 µs
🔹 B. No, because 5 µs > 8 µs
🔹 C. It depends on the load capacitance
🔹 D. The converter must be re‑programmed

💡 Difficulty: medium | ✅ Correct: B

Q3. A microcontroller uses an 8257 DMA controller to transfer a waveform buffer of 2048 samples to a 10‑bit D/A converter at a rate of 250 kS/s. Which DMA configuration ensures continuous output without underrun?

🔹 A. Mode word set to single‑cycle, terminal count 2047
🔹 B. Mode word set to block‑transfer, terminal count 2048
🔹 C. Mode word set to demand‑transfer, terminal count 2047
🔹 D. Mode word set to cascade, terminal count 2048

💡 Difficulty: hard | ✅ Correct: C

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