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πŸ“ 8085 Microprocessor Based Washing Machine Controller

πŸ“– From An Introduction To Microprocessor 8085 β€’ 15. Applications of Microprocessor β€’ 22 questions available

Practice MCQs for 8085 Microprocessor Based Washing Machine Controller. Test your knowledge with carefully crafted questions across easy, medium, and hard difficulty levels.

πŸ”„ Last updated: 2026-07-30

4
Easy Questions
11
Medium Questions
7
Hard Questions

πŸ“ Sample Questions

Q1. Which opcode is used for the IN instruction that reads data from an I/O port in the 8085 microprocessor?

πŸ”Ή A. DB
πŸ”Ή B. D3
πŸ”Ή C. E6
πŸ”Ή D. F5

πŸ’‘ Difficulty: easy | βœ… Correct: B

Q2. At which memory address does the monitor program reside that clears the seven‑segment display in the Vinytics kit?

πŸ”Ή A. 0347H
πŸ”Ή B. 0400H
πŸ”Ή C. 05D0H
πŸ”Ή D. 0200H

πŸ’‘ Difficulty: medium | βœ… Correct: A

Q3. In a washing machine controller, why must the overflow from the seconds counter trigger an increment of the minutes counter rather than resetting the entire time display?

πŸ”Ή A. To maintain accurate elapsed time
πŸ”Ή B. To reduce code size
πŸ”Ή C. To avoid using interrupts
πŸ”Ή D. To synchronize with the motor speed

πŸ’‘ Difficulty: hard | βœ… Correct: A

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