Saturday, April 21

Microprocessor and interfacing MCQ


1. The size of 8086 16 bit is decided by
a.  Control Bus                                                   b. Data Bus                 
c. Address Bus                                                   d. Flag register

2. The size of address bus of 8086 is
a. 16 bit                                                               b. 32 bit             
c. 20 bit                                                               d. 64 bit

3. Which one is/are control flag in flag register?
a. Trap       flag                                                   b. Interrupt flag         
c. Direction Flag                                                d. All of these

4. How many pins are there in 8086 microprocessor?
a. 24                              b. 28                              c. 40                              d. 16

5. How many pins are there in 8251 USART chip?
a. 24                              b. 28                              c. 40                              d. 16

6. How many pins are there in 8253 PIT chip?
a. 24                              b. 28                              c. 40                              d. 16

7. How many pins are there in 8255 PPI chip?
a. 24                              b. 28                              c. 40                              d. 16

8. How many pins are there in 8237 DMA chip?
a. 24                              b. 28                              c. 40                              d. 16

9. How many pins are there in 8259 PIC chip?
a. 24                              b. 28                              c. 40                              d. 16

10. How many pins are there in 8279 KDC chip?
a. 24                              b. 28                              c. 40                              d. 16

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