Which one of the following is the lowest priority interrupt in the 8086 microprocessor?

In the 8086 microprocessor, interrupts are categorized by priority. Here's the general priority order from highest to lowest:

1. Divide by Zero Exception
2. Single Step (Trap Flag enabled)
3. NMI (Non-Maskable Interrupt)
4. INTR (Maskable Interrupt Request) ← Lowest priority

 Details of the Options

1. NMI (Non-Maskable Interrupt)

   • High priority, cannot be disabled by software.
   • Used for critical hardware faults.

2. Divide by Zero

   • A hardware exception triggered automatically.
   • Very high priority.

3. Single Step

   • Triggered when Trap Flag is set for debugging.
   • Higher than NMI.

4. INTR (Interrupt Request)

   • Maskable interrupt that can be enabled or disabled using the Interrupt Flag (IF).
   • Used for standard peripheral interrupts.
   •  Lowest priority among the listed.