Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 4th Sem Old 140701 Microprocessor And Interfacing Previous Question Paper
1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?IV (OLD) EXAMINATION ? WINTER 2018
Subject Code:140701 Date: 28/11/2018
Subject Name: Microprocessor And Interfacing
Time: 02:30 PM TO 05:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
Q.1 (a) i. Distinguish between assembly language and high level languages.
ii. Explain flag register in 8085.
04
03
(b) i. Explain functioning of following pins of 8085.
(i) ALE (ii) READY (iii) INTR (iv) HOLD.
ii. The memory map of 8K byte memory chip begins at the location 8000 H.
Specify the address of the last location on the chip.
04
03
Q.2 (a) Compare memory mapped I/O with I/O mapped I/O. 07
(b) Explain execution of instruction LDA 3000H with timing diagram. 07
OR
(b) Explain execution of instruction OUT F0H with timing diagram. 07
Q.3 (a) What is stack and stack pointer? Explain working of PUSH and POP
instructions with suitable example.
07
(b) What do we mean by Addressing Modes? Explain, giving suitable example, all
the addressing modes supported by 8085.
07
OR
Q.3 (a) Write a program to generate delay of 50 msec. Make necessary assumptions and
mention it clearly.
07
(b) Explain following instructions of 8085.
(i) LDA and LDAX (ii) RAL and RLC (iii) DAA
07
Q.4 (a) Data block of ten data bytes is stored in memory starting from locations 2000H.
Write a program to count even numbers in this data block. Store the result in
memory location 3000H.
07
(b) List various vectored interrupts in 8085. Give their vectored locations,
triggering methods and priority.
07
OR
Q.4 (a) A binary number is stored in memory location 2000H. Write a program to
convert it into equivalent unpacked BCD representation. Store result in
consecutive memory locations starting from 3000H with most significant digit
stored first.
07
(b) Explain the function of RIM and SIM instructions in 8085. 07
Q.5 (a) Draw and explain block diagram of 8255. 07
(b) With neat diagram discuss working of IC 8259A -Programmable interrupt
controller.
07
OR
Q.5 (a) Explain with block diagram function of 8254 programmable interval timer. 07
(b) What is direct memory transfer? Explain 8257 DMA controller with block
diagram.
07
*************
www.FirstRanker.com www.FirstRanker.com
www.FirstRanker.com
FirstRanker.com - FirstRanker's Choice
This post was last modified on 20 February 2020