M.Sc. (Semester II) (CBCS) Examination Nov/Dec-2018
Physics (Applied Electronics)
MICROPROCESSORS MICROCONTROLLERS
Time: 2½ Hours Max. Marks: 70
Instructions: Q.1 and Q.2 is compulsory.
Any three questions from Q.3 to Q.7.
Figures to the right indicate full marks.
Q.1 Choose the correct option:- 08
number of address line required to select registers of
internal 4K byte of ROM.
10 14
12 16
ISR ends with
IE RET
RETI RI, TI
Identify the invalid instruction
MOV MOVX @DPTR
MOVC A+PC MOV
Serial port vector address is and causes an interrupt when

0013H, either TI or RI set 0023H, either TI or RI reset
0023H, either TI and RI set 0023H, either TI or RI set
The IP is bits in length.
8 bits 4 bits
16 bits 32 bits
The contains an offset instead of actual address.
SP IP
ES SS
The 8086 fetches instruction one after another from of
memory.
Code Segment IP
ES SS
The intel 8086 microprocessor is a processor.
8 bit 16 bit
32 bit 64 bit
Q.1 State True or False:- 06
The vector address for the timer0 interrupt is 000BH.
In 8086 microprocessor, the address bus is 20 bit wide.
The work of EU (Execution Unit) is encoding.
The 8051 microcontroller is of Von Numan Architecture.
The bit addressable memory area of 8051 is from 00H to 7FH.
The MUL B is the valid instruction in 8051.
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SLR-VQ-457
Q.2 Draw and explain the PSW format of 8051.
Explain the minimum mode of 8086.
What are the advantages of memory segmentation?
05
05
04
Q.3 Draw and Explain the bus controller used in 8086 to generate a different
control signal in maximum mode.
Write a assembly language program to block exchange in 8086.
08
06
Q.4 Draw and explain the architecture of 8051.
Explain the following instructions of 8051.
i. JBC radd
ii. ANL
08
06
Q.5 Explain the interrupt structure of 8086.
Explain the following pins of 8086.
i. NMI
ii. READY
08
06
Q.6 Explain the SFRs associated with Serial Communication. 08
Write a assembly language program to find a seven segment code of the
unpacked BCD number by using lookup table. (Consider Common Anode
type of seven segment display)
06
Q.7 Explain the different addressing modes of 8086 with example. 08
Explain the Port-3 structure of 8051. 06