📝 8085 Microprocessor Based Stepper Motor Control

Q1. A microprocessor 8085 controls a 4‑phase stepper motor through port 01H. To rotate clockwise one step every 200 ms, which binary pattern should be output first?

💡 Difficulty: easy | ✅ Correct: A

Q2. What is the hexadecimal address of the memory location that stores the seconds value in the described real‑time clock design?

💡 Difficulty: medium | ✅ Correct: C

Q3. During testing, the motor skips steps when the clock frequency is set to 2 MHz. Which software change will most effectively prevent missed steps?

💡 Difficulty: hard | ✅ Correct: A