Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2018 Winter 5th Sem New 2150306 Microcontroller And Interfacing Biomedical Previous Question Paper
1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?V (NEW) EXAMINATION ? WINTER 2018
Subject Code:2150306 Date:20/11/2018
Subject Name:Microcontroller & Interfacing (Biomedical)
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) What is the difference between a microcontroller and
microprocessor?
03
(b) Draw inside the 8051 Microcontroller block diagram and
explain a brief history of the 8051.
04
(c) Draw and explain architecture of 8051 microcontroller. 07
Q.2 (a) Explain DB, EQU and END directives. 03
(b) How do you assemble and run an 8051 program? 04
(c) Write a program for AT89C51 to toggle all the bits of P0
and P1 every ? of a second. Assume a crystal frequency
of 11.0592 MHz
07
OR
(c) Draw and explain Pin description of the 8051
microcontroller.
07
Q.3 (a) How to switch register banks? Write necessary codes. 03
(b) Assume that XTAL = 20MHz. Find the TH1, TL1 value
to generate a time delay of 1 ms. Timer1 is programmed
in mode 1.
04
(c) Explain logic and compare instructions with examples in
assembly language programming.
07
OR
Q.3 (a) Explain PUSH and POP instruction with example. 03
(b) Explain the dual role of Port 2. 04
(c) Explain timer mode 1 programming with its steps and
logic diagram.
07
Q.4 (a) Write 8051 interrupt priority upon reset. How do you set
it with IP register?
03
(b) Explain SCON special function register in detail. 04
(c) Write an 8051 C program to send letters ?W?,?R? and ?K?
to the LCD using delays.
07
OR
Q.4 (a) Write a program to receive the data which has been sent
in serial form and send it out to port 1 in parallel form.
Also save the data at RAM location 50H.
03
(b) Explain TCON special function register in detail. 04
(c) Draw 8051 connection to ADC0809 for channel 1. Write
necessary assemble language code for it.
07
Q.5 (a) Define Interrupt Service Routine (ISR) and Interrupt
Vector Table for the 8051.
03
(b) Write a note on electromechanical relays. 04
(c) Draw and explain 8051 connection to external data ROM.
Explain MOVX instruction.
07
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1
Seat No.: ________ Enrolment No.___________
GUJARAT TECHNOLOGICAL UNIVERSITY
BE - SEMESTER ?V (NEW) EXAMINATION ? WINTER 2018
Subject Code:2150306 Date:20/11/2018
Subject Name:Microcontroller & Interfacing (Biomedical)
Time: 10:30 AM TO 01:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Figures to the right indicate full marks.
MARKS
Q.1 (a) What is the difference between a microcontroller and
microprocessor?
03
(b) Draw inside the 8051 Microcontroller block diagram and
explain a brief history of the 8051.
04
(c) Draw and explain architecture of 8051 microcontroller. 07
Q.2 (a) Explain DB, EQU and END directives. 03
(b) How do you assemble and run an 8051 program? 04
(c) Write a program for AT89C51 to toggle all the bits of P0
and P1 every ? of a second. Assume a crystal frequency
of 11.0592 MHz
07
OR
(c) Draw and explain Pin description of the 8051
microcontroller.
07
Q.3 (a) How to switch register banks? Write necessary codes. 03
(b) Assume that XTAL = 20MHz. Find the TH1, TL1 value
to generate a time delay of 1 ms. Timer1 is programmed
in mode 1.
04
(c) Explain logic and compare instructions with examples in
assembly language programming.
07
OR
Q.3 (a) Explain PUSH and POP instruction with example. 03
(b) Explain the dual role of Port 2. 04
(c) Explain timer mode 1 programming with its steps and
logic diagram.
07
Q.4 (a) Write 8051 interrupt priority upon reset. How do you set
it with IP register?
03
(b) Explain SCON special function register in detail. 04
(c) Write an 8051 C program to send letters ?W?,?R? and ?K?
to the LCD using delays.
07
OR
Q.4 (a) Write a program to receive the data which has been sent
in serial form and send it out to port 1 in parallel form.
Also save the data at RAM location 50H.
03
(b) Explain TCON special function register in detail. 04
(c) Draw 8051 connection to ADC0809 for channel 1. Write
necessary assemble language code for it.
07
Q.5 (a) Define Interrupt Service Routine (ISR) and Interrupt
Vector Table for the 8051.
03
(b) Write a note on electromechanical relays. 04
(c) Draw and explain 8051 connection to external data ROM.
Explain MOVX instruction.
07
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2
OR
Q.5 (a) Explain the importance of RI and TI flags. 03
(b) Explain various addressing modes of 8051
microcontroller.
04
(c) Explain the connection diagram for controlling Stepper
Motor via Optoisolator. Write an assembly code if a
switch SW is connected to pin P2.7 then monitor its status
and perform the following:
(1) If SW=1, the stepper motor moves clockwise.
(2) If SW=0, the stepper motor moves
counterclockwise.
07
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This post was last modified on 20 February 2020