Microprocessor Mock Test 10

10%

Question 1 of 10

1. The first byte of a short jump instruction represents

none

opcode field

opcode byte

relative address

Question 1 of 10

Question 2 of 10

2. To come out of idle mode, the external interrupt that is enabled is

INT0

INT1

All of the mentioned

SI(serial)

Question 2 of 10

Question 3 of 10

3. The conditional control transfer instructions check a bit condition which includes any bit of

content of accumulator

bit addressable RAM

all of the mentioned

bit addressable SFRs

Question 3 of 10

Question 4 of 10

4. After the display is selected by second port, then the digit (LED) glows for a duration of

5 msec

10 msec

6 msec

2 msec

Question 4 of 10

Question 5 of 10

5. Each port line of a port can individually source a current of upto

0.5 mA

0.2 mA

0.25 mA

0.75 mA

Question 5 of 10

Question 6 of 10

6. Which is true in interfacing 7 segment code display?

none of the mentioned

transmitted by second port

display is selected by second port

display is selected by third port

Question 6 of 10

Question 7 of 10

7. Among the five interrupts generated by 8051, the highest priority is given to the interrupt

TF0

IE1

TF1

IE0

Question 7 of 10

Question 8 of 10

8. In serial port interrupt, after the control is transferred to the interrupt service routine, the flag that is cleared is

None

RI and TI

Question 8 of 10

Question 9 of 10

9. The number of priority levels that each interrupt of 8051 have is

Question 9 of 10

Question 10 of 10

10. The control transfer instructions are divided into

conditional and unconditional control transfer instructions

all of the mentioned

auto control and self control transfer instructions

explicit and implicit control transfer instructions

Question 10 of 10