This section contains more frequently asked Microprocessors Basics MCQs in the various University Level and Competitive Examinations.
1. The external device is connected to a pin called the ______ pin on the processor chip
- Interrupt
- Transfer
- Both
- None of these
A. Interrupt
2. Which interrupt has the highest priority?
- INTR
- TRAP
- RST6.5
- none of these
B. TRAP
3. In 8085 name the 16 bit registers?
- Stack pointer
- Program counter
- a & b
- none of these
C. a & b
4. What are level Triggering interrupts?
- INTR&TRAP
- RST6.5&RST5.5
- RST7.5&RST6.5
- none of these
B. RST6.5&RST5.5
5. Which stack is used in 8085?
- FIFO
- LIFO
- FILO
- none of these
B. LIFO
6. What is SIM?
- Select Interrupt Mask
- Sorting Interrupt Mask
- Set Interrupt Mask.
- none of these
C. Set Interrupt Mask.
7. RIM is used to check whether, ______
- The write operation is done or not
- The interrupt is Masked or not
- a & b
- none of these
B. The interrupt is Masked or not
8. In 8086, Example for Non maskable interrupts are
- Trap
- RST6.5
- INTR
- none of these
A. Trap
9. In 8086 microprocessor the following has the highest priority among all type interrupts.
- NMI
- DIV 0
- TYPE 255
- OVER FLOW
A. NMI
10. BIU STAND FOR:
- Bus interface unit
- Bess interface unit
- A and B
- None of these
A. Bus interface unit