📖 From An Introduction To Microprocessor 8085 • 15. Applications of Microprocessor • 22 questions available
Practice MCQs for 8085 Microprocessor Based Automatic School bell system. Test your knowledge with carefully crafted questions across easy, medium, and hard difficulty levels.
🔄 Last updated: 2026-07-30
Q1. Which memory address contains the monitor program that clears the six‑digit display?
💡 Difficulty: easy | ✅ Correct: B
Q2. A school wants the bell to ring every 45 minutes. If the 8085 operates at a 3 MHz crystal, which timer count should be loaded into the 16‑bit timer to achieve this interval?
💡 Difficulty: medium | ✅ Correct: B
Q3. If the real‑time clock routine fails to reset the timer after an overflow, what long‑term effect will occur?
💡 Difficulty: hard | ✅ Correct: A
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