Download GTU B.Tech 2020 Winter 4th Sem 2141001 Microprocessor And Interfacing Question Paper

Download GTU (Gujarat Technological University Ahmedabad) B.Tech/BE (Bachelor of Technology/ Bachelor of Engineering) 2020 Winter 4th Sem 2141001 Microprocessor And Interfacing Previous Question Paper

Seat No.: ________
Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE- SEMESTER?IV (NEW) EXAMINATION ? WINTER 2020
Subject Code:2141001 Date:11/02/2021
Subject Name:Microprocessor and Interfacing
Time:02:30 PM TO 04:30 PM Total Marks:56
Instructions:
1. Attempt any FOUR questions out of EIGHT questions.

2. Make suitable assumptions wherever necessary.

3. Figures to the right indicate full marks.



MARKS
Q.1 (a) Explain the flag register and flag bits of 8085.
03

(b) Explain the need of and / pins of the 8085 microprocessor
04

(c) What is stack? Explain stack operations in 8085 microprocessor using
07
PUSH and POP instructions with neat sketches. When stack operations are
needed?


Q.2 (a) Explain three control flag bits of 8086 microprocessor.
03

(b) Classify the interrupts in 8085 Microprocessor
04

(c) Draw and explain programming model of 8085 microprocessor.
07
Q.3 (a) Give the Comparison of RISC and CISC Microprocessor
03

(b) Compare I/O mapped I/O and memory mapped I/O with respect to 8085
04
microprocessor

(c) Draw and explain timing diagram of IN instruction.
07




Q.4 (a) List out the priorities of hardware interrupts in 8085.
03

(b) Compare Static RAM and Dynamic RAM memory
04

(c) Draw and explain timing diagram of OUT instruction.
07
Q.5 (a) Explain the difference between JMP and CALL instructions with example
03

(b) What are the function of below pins of 8251 USART
04
DSR', DTR', RTS', CTS'

(c) Write a program to generate a continuous square wave of period 500?s
07
and use bit D0 to output the square wave and system clock period is
325ns.



Q.6 (a) Explain the function of Program Counter.
03

(b) Write a short note on branch instructions of 8085
04

(c) Write an assembly program to add 6 data bytes stored from memory
07
location 2050h, the result can be more than 8 bits and display it at output
ports 81h and 82h respectively
Q.7 (a) State features of 8259 programmable interrupt controller.
03

(b) List and explain Addressing Modes of the 8085 microprocessor.
04

(c) Write a program to transfer the data bytes stored from memory location
07
2050 to 2056h to the memory location 3050 to 3056 in reverse order.



Q.8 (a) What is the difference between absolute decoding and partial decoding?
03
Explain with example.
(b) List the advantages of memory segmentation in the 8086 microprocessor.
04
(c) Draw architecture 8086 microprocessor. Explain its basic features.
07
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