📖 From An Introduction To Microprocessor 8085 • 10. Programmable Keyboard and Display Interface: 8279 • 7 questions available
Practice MCQs for Strobed Input of 8279. Test your knowledge with carefully crafted questions across easy, medium, and hard difficulty levels.
🔄 Last updated: 2026-07-30
Q1. Which pin on the 8253 timer is designated as the Chip Select (CS) terminal?
💡 Difficulty: easy | ✅ Correct: A
Q2. Why is the CS (Chip Select) signal defined as active‑low on the 8253 timer?
💡 Difficulty: medium | ✅ Correct: A
Q3. If pin 14 (GATE 1) is held low while the WR line is also low, what operation is performed on counter 1?
💡 Difficulty: hard | ✅ Correct: B
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