Download GTU BE/B.Tech 2019 Winter 6th Sem Old 160903 Microcontroller Question Paper

Download GTU (Gujarat Technological University) BE/BTech (Bachelor of Engineering / Bachelor of Technology) 2019 Winter 6th Sem Old 160903 Microcontroller Previous Question Paper

1
Seat No.: ________ Enrolment No.___________

GUJARAT TECHNOLOGICAL UNIVERSITY

BE - SEMESTER ? VI (Old) EXAMINATION ? WINTER 2019
Subject Code: 160903 Date: 04/12/2019

Subject Name: Microcontroller

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) With the help of neat sketch explain the functional block diagram of 8051

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(b)
Draw and explain structure of P0 and P1 ports in 8051 microcontroller
07

Q.2 (a) Write a short note on internal memory structure of 8051.

07
(b) Explain all the bits of PSW register & hence find the control word for selecting
register bank 2.

07
OR
(b) Explain the instructions 1.PUSH 2.POP 3.DJNE 4.LCALL

07

Q.3 (a) Write a program to find the average of ten 8 bit numbers stored at memory
location 25H onwards. Store the result at 50H.

07
(b)
Discuss the different types addressing modes available in 8051 with suitable
illustrations
07
OR
Q.3 (a) Write an ALP to find 2?s compliment of a number

07
(b) Explain the following instruction
1. ACALL 2. DJNZ 3. RETI 4.SWAP


07

Q.4 (a)
Explain TCON and TMOD special function registers. Also discuss how external
interrupts can be made edge triggered by setting appropriate bits in TCON
07
(b) Write an 8051 C program to transfer the message ?WELCOME? serially at 9600
baud 8 bit data, 1 stop bit. Do this continuously

07
OR
Q.4 (a)
How serial data transmission can be done using SCON and SBUF register? Which
options are available to increase data transfer rate in 8051?
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(b) Write a C program to toggle all the bits of port0 continuously with 75ms time
delay.

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Q.5 (a)
Explain LCD interfacing with 8051 microcontroller
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(b) Write a short note on data types available in embedded C.

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OR

Q.5 (a) Draw and explain in brief the interfacing circuit of unipolar stepper motor with
8051


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(b)
Explain how the speed and direction of DC motor can be controlled using
microcontroller
07

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