📖 From An Introduction To Microprocessor 8085 • 11. Programmable Interrupt Controller: 8259 • 13 questions available
Practice MCQs for Interfacing of 8259A with 8085A. 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 is designated as the Chip Select (CS) terminal?
💡 Difficulty: easy | ✅ Correct: A
Q2. What is the primary purpose of the GATE n input on each 8253 counter?
💡 Difficulty: medium | ✅ Correct: D
Q3. A designer needs a 1 kHz square wave from counter 0 using a 2 MHz system clock. Which count value should be loaded into counter 0 in mode 2?
💡 Difficulty: hard | ✅ Correct: C
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