Download AKTU B-Tech 5th Sem 2015-2016 Microprocessors Nec 503 2 Question Paper

Download AKTU (Dr. A.P.J. Abdul Kalam Technical University (AKTU), formerly Uttar Pradesh Technical University (UPTU) B-Tech 5th Semester (Fifth Semester) 2015-2016 Microprocessors Nec 503 2 Question Paper

Printed Pages: 4 67 NEC?503
(F ollowing Paper ID and Roll No. to be ?lled in your
Answer Book) '
Roll No.
B.TECH.
(SEM. V) THEORY EXAMINATION, 2015-16
MICRO PROCESSORS v '
'[Timez3 hours] . [Total Mark's:100]
Sect?ion-A?
N ote ,: All questions are compulsory. ?
1. Attempt all parts .All parts carry equal marks. Write
answer of all part in short . - (2x10:20) '
(a) . Give the signi?cance of SIM and RIM instruction
available in 8085.
(b) Explain the role ofREP pre?x in 8086."
(c) Give excitation table to rotate stepper motor in clockwise .
direction. I?
(d) What do you mean by assembler directives? ,
(e) What is the arithmetic operation happens in shift
instruction?
0
11600 ( 1) P.T.O.

(.0
(g)
(h)
0)
Attempt any ?ve questions from this section.
2;
11600
What are the 8086 intererupt types?
Calculate the number of memory chips needed to design
64K byte memory if memory chip size available is
2048 x 1 ? ?
What is USART?
Explain the role of DT/R and DEN signals of 8086?
Draw frame structures for syschronous and
asynchronous modes of transmission.
Section-B
(10x5=50)
(a) What do you mean -by machine cycle, instruction
cycle and T?states.
(b) Draw the timming diagram for OUT instruction.
(a) What is the difference between Maximum and
Minimum mode of operation in 8086.
(b) Explain the advantages of dividing memory ihto
segments. How is the 20 bit physical address for
memory generated? Explain with examples.
(2) NEC-503
Explain with an example the various types of addressing
modes supported by 8086 microprocessors.
(a) Write a 8086 assembly language program to
convert binary to BCD.
(b) Explain the following assembler directive:
. (i) EXTRN
(ii) PUBLIC
(iii)- EVEN
(iv) ORG
(v) DI?
WAP using 8086 to interface seven segment display with
825 5.
Write a program to generate a square wave of 500 ,u s
using 8086. Assume 5 MHz Clock frequency.
Explain the command words of 8259.
Draw and explain the functional block diagram of 8257.
11600 (3) P.T;o.

Section-C
Attempt any two questions from this section.
(15X2=30)
10. (a) Explain the programming-mOdel of 8085.
(b) What are interrupts? What happens when an
interrupt is encountered? Classify the interrupt of
8085.
11. Explain the concept of timer and delay in 8086. Explain
various methods of genrating delay using suitable
instructions.
12. (a) Explain the difference between RAM and ROM.
(b) Differentiate between 8085 & 8086.'
(0) Compare RSZ32C'and RS422Astandards.
_X__
11600 _ (4) NEC-503