Download PTU (Punjab Technical University) B.Tech (Bachelor of Technology) / BE (Bachelor of Engineering) 2021 January EE 5th Sem 78311 Microprocessors Previous Question Paper
Total No. of Pages : 02
Total No. of Questions : 18
B.T ech. (Electrical & Electronics)/(Electr ical Engineering)/
(Electronics & Electrical) (Sem.?5)
MICROPROCESSORS
Subject Code : BTEE-503-18
M.Code : 78311
Time : 3 Hrs. Max. Marks : 60
INST RUCT ION TO CANDIDAT ES :
1 .
SECT ION-A is COMPULSORY cons is ting of TEN questions carrying TWO marks
each.
2 .
SECT ION-B c ontains F IVE questions c arrying FIVE marks eac h and s tud ents
have to atte mpt any FOUR q ues tions.
3 .
SECT ION-C contains THREE questions carrying T EN marks e ach and s tudents
have to atte mpt any T WO questio ns.
SECTION-A
Answer briefly :
1)
What do you mean by CPU timing? Explain.
2)
How microprocessor differentiate between data and instruction code? Explain.
3)
List the advantages of higher level languages.
4)
Explain the need of stack.
5)
Discuss the concept of pre-fetch queue in 8086.
6)
What is memory segmentation? Explain.
7)
Differentiate memory mapped I/O and Peripheral I/O.
8)
What is a flow chart? Discuss its significance.
9)
What is the function of USART? Explain.
10) Why interrupt controller is required? Explain.
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SECTION-B
11) Discuss the following instructions w.r.t. 8085 :
a) XTHL
b) DAA
c) STC
d) NOP and HLT
e) XCHG
12) Draw a flow chart and write a program to find out the largest number from a set of ten
numbers stored at a memory location 2050H using 8085 microprocessor instructions.
13) What is the need of addressing modes? Discuss various addressing modes of 8086
microprocessor with the help of examples.
14) Draw a flow chart and write a program using 8086 to count from 0 to 9 with a one second
delay between each count. At the count of 9, the counter should reset itself to zero and
repeat the sequence continuously. The clock frequency of the microcomputer is 1 MHz.
15) Discuss (in detail) Mode 0 and Mode 1 of 8253 chip.
SECTION-C
16) Discuss different modes of programmable peripheral interface 8255A in detail? Explain
the control words of 8255 in I/O and BSR modes.
17) Draw and explain the architecture of 8085 microprocessor with the help of a functional
block diagram.
18) Explain the following :
a) Hardware and software interrupts in 8086
b) Microprocessor and Microprocessor development systems
NOTE : Disclosure of Identity by writing Mobile No. or Making of passing request on any
page of Answer Sheet will lead to UMC against the Student.
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This post was last modified on 26 June 2021