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Bharathidasan Engineering College NATTRAMPALLI - 635 854.: B.E., EEE - 3 Year

This document contains questions for a model exam on microprocessors and microcontrollers. It is divided into two parts: Part A contains 10 multiple choice questions worth 2 marks each about various microprocessor and microcontroller concepts like interrupt execution in 8259 PIC, functions of 8255 PPI, alternate functions of 8051 ports, sizes of SP and BP in 8051, 8051 instructions, operations of 8051 Boolean instructions, 8251 USART mode word format, uses of ISR and PR in 8259 PIC, and on-chip peripherals of 8051. Part B contains 5 long answer questions worth 16 marks each about interfacing concepts like operation of 8255 PPI in mode 1, programming of

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44 views2 pages

Bharathidasan Engineering College NATTRAMPALLI - 635 854.: B.E., EEE - 3 Year

This document contains questions for a model exam on microprocessors and microcontrollers. It is divided into two parts: Part A contains 10 multiple choice questions worth 2 marks each about various microprocessor and microcontroller concepts like interrupt execution in 8259 PIC, functions of 8255 PPI, alternate functions of 8051 ports, sizes of SP and BP in 8051, 8051 instructions, operations of 8051 Boolean instructions, 8251 USART mode word format, uses of ISR and PR in 8259 PIC, and on-chip peripherals of 8051. Part B contains 5 long answer questions worth 16 marks each about interfacing concepts like operation of 8255 PPI in mode 1, programming of

Uploaded by

Raji Sharmi
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as DOC, PDF, TXT or read online on Scribd
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BHARATHIDASAN ENGINEERING COLLEGE

NATTRAMPALLI 635 854.


B.E., EEE 3
RD
year
MODEL EXAM I
Sub name
Sube!"
# MICROPROCESSORS AND
MICROCONTROLLER
Ma$ Ma%&'# ())
Sub C*+e # EE,354 T-me # 3 .*u%'
Part- A (10 x 2 = 20 marks)
1. What are the different ways to end the interrupt execution in 8259
Programmable Interrupt controller
2. What is the function of !can section in 82"9 programmable #eyboard$%isplay
&ontroller
'. (ist the alternati)e functions assigned to Port ' pins of 8*51 microcontroller.
+. ,ention the si-e of %P./ and !tac# Pointer in 8*51 microcontroller.
5. What is the operation of the gi)en 8*51 microcontroller instructions0 1/( 23direct
4. What are the different operations performed by 5oolean )ariable instruction of
8*51.
" %raw the 6,ode Word7 format of 8251 8!2/..
8. !tate the use of I!/ and P/ registers in 8259 PI&.
9. (ist the on9chip peripherals of 8*51 microcontroller.
1*. Why do we need opto9isolator circuit between microcontroller and the !tepper motor
Part- B(5x 16=80 marks)
11. :a; <xplain the operation of 8255 PPI Port 2 programmed as input
and output in ,ode 1 with necessary handsha#ing signals. :14;
=>/?
:b; With functional bloc# diagram3 explain the operation and programming of 8251
8!2/. in detail :14;
12 :a; i;%raw the logical bloc# diagram of 82"9 #eyboard display controller and
explain.:8;
ii; %raw and explain the functional bloc# diagram of 8259 programmable
interrupt controller :8;
=>/?
:b; :i; %raw the control word of 825' timer$counter and explain the operating modes
of 825' timer$counter. :8;
:ii; Why do we need 2$% con)erter and %$2 con)erter %raw the bloc# diagram to
interface 8*85 microprocessor with 2$% con)ertor and %$2 con)ertor. :8;
1' :a; :i; <xplain the program memory and data memory structure of 8*51
microcontroller. :8;
:ii; %raw the pin diagram of 8*51 microcontroller and explain its port structure. :8;
=>r?
:b; :i; %raw the .,>% register format and explain the different operating modes of
timer in 8*51 microcontroller. :8;
:ii; <xplain how serial communication is performed in 8*51 microcontroller. :8;
1+. :a; :i; <xplain the %ata transfer instructions and Program control instructions of 8*51
microcontroller. :8;
:ii; Write an assembly language program based on 8*51 microcontroller instruction set
to perform four arithmetic operations on 23 8 bit data. :8;
=>r?
:b; :i; <xplain the interfacing of @eyboard$%isplay with 8*51 ,icrocontroller. :8;
:ii; <xplain the !er)omotor control using 8*51 microcontroller. :8;
15. :a; :i; <xplain with a program to rotate the stepper motor in both cloc#wise and
anticloc#wise direction using 8*51 microcontroller. :8;
:ii; Aow to interface a " segment display using 8*51 microcontroller. :8;
=>r?
:b; :i; Aow 8*51 is used in washing machine control :8;
:ii; Aow do you interface a + B + matrix #eyboard using 8*51 microcontroller :8;

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