Electronic Quiz 4 (8085 Microprocessor)
1. Why 8085 is called an 8-bit Micro Processor?| A. | It has 8-bit ports | B. | It has 8-bit data bus |
| C. | ALU can perform operation on 8-bit data | D. | All of these |
2. Which Register Pair is not accessible by user?
| A. | AB | B. | DE |
| C. | WZ | D. | HL |
3. What is the maximum size of external memory 8085 can access?
| A. | 60kB | B. | 68kB |
| C. | 61kB | D. | 64kB |
4. The maximum frequency that 8085 can operate at is?
| A. | 3MHz | B. | 10MHz |
| C. | 6MHz | D. | 5MHZ |
5. What is SIM in 8085 Microprocessor?
| A. | Select Interrupt Mask | B. | Set Interrupt Mask |
| C. | Start Interrupt Mask | D. | Sort Interrupt Mask |
6. Which kind of stack Memory is used in 8085?
| A. | FIFO | B. | FILO |
| C. | LIFO | D. | LILO |
7. Which interrupt has Highest Priority?
| A. | INTR | B. | RST 7.5 |
| C. | TRAP | D. | RST 6.5 |
8. What is the size of address for I/O devices?
| A. | 16 bit | B. | 32 bit |
| C. | 9 bit | D. | 8 bit |
9. AD0-AD7 lines are __?
| A. | De-multiplexed | B. | Time shared |
| C. | Isolated address and data lines | D. | All of these |
10. Whenever carry is generated from lower nibble (4-bits) to higher nibble(4-bits) which flag is affected?
| A. | Sign Flag | B. | Parity Flag |
| C. | Carry Flag | D. | None of these |
CACKLE comment system
