Diploma in Engineering

Friday 9 December 2011

List of lab experiments of Digital electronics of first Sem Diploma- EC

Department of Technical EducationDiploma Programme in Electronics and Communication Engineering/ Electronic Instrumentation & Control Engineering 1st SEMISTER

SUBJECT : DIGITAL ELECTRONICS LAB

Common to E&C, EI&C, CS&E and IS&E
Lab Experiments :
A1 Familiarization of Digital trainer kit, IC tester, Logic pulser, logic probe
2Study of IC Manual and familiarization of Ics and IC familiesB1Familiarization of logic gates using Ics

a) 7400 b) 7402 c) 7404 d) 7408 e) 7432 f) 7486
2 Realization of NOT, OR, AND, NOR, EX-OR and EX-NOR gates using NAND gate
3 Realization of NOT, OR, AND, NOR, EX-OR and EX-NOR gates using NOR gate
4 Implementing and verifying Boolean Expression using K-map
5 Verification of DeMorgan's theorem and realization of the given expression using Demorgan's law
6 Implementing Half Adder and Full Adder using logic gates
7 Implementing Half Subtractor and Full Subtractor using logic gates
8 Verification of truth table of Flip-Flop

i ) Clocked RS FF using NAND Gates

ii) JK FF Using IC 7476

iii) T and D FF using IC 7476.
9 Realize Binary to Gray code converter using IC 7486
10 Realize Gray to Binary code converter using IC 7486
11 Realize parity generator and checker using IC 7486
12 Familiarization of IC 7483 with 4bit addition
13 Realize 2-bit comparator using logic gates and familiarization of IC 7485
14 Interface 7 segment display with IC 7447 / 7448 decoder .
15 Verify the truth table of 1:8 Demultiplexer and 8:1 multiplexer using IC 74138 and 74151respectively
16 Verify the truth table of priority encoder using IC 74147
17 Realize and verify the truth table of 4:1 Multiplexer using 2:1 Multiplexer
18 Verify the truth table of Shift Reigister 7495 ( SISO, SIPO, PISO, PIPO)
19 Veirfy the truth table of a) up-down counter using IC- 74193 b) Decade counter using IC-7490REFERENCES :

DIGITAL ELECTRONICS PRACTICE WITH INTEGRATED CIRCUITS

R.P.JAIN AND MMS ANAND



SCHEME OF VALUATION
Note: Pin diagrams of IC's shall be provided to the students .
1 Record
2 Write up any Two Experiments (Circuit Diagram,Truth Table Expression)
3 Conduction any one Experiment
4 Result
5 Viva-Voce

Model question paper of DIGITAL ELECTRONICS of Diploma 1st Sem - E C

            MODEL QUESTION PAPER
        FIRST SEMESTER
           SUBJECT : DIGITAL ELECTRONICS-1
        Common to E&C ,EI&C,CS&E and IS&E.
        SUBJECT: DIGITAL ELECTRONICS-I
        TIME :3 HRS                                                                         MAX.MARKS :100

        Note: 1)Section A is compulsory.
                  2) Answer any two main questions from each of the remaining Sections

SECTION: A

1    a.    Fill in the blanks with suitable words                                    5X1
    (i)    The radix of hexadecimal number system is _______________
    (ii)    The number of flip-flops required for decade counter is ______________
    (iii)    Race around condition is eleminated in ________________ flip flop
    (iv)    An example for unsaturated logic _________ Ics
    (v)    The SISO shift register with feed back _________ counter

    b.    Write a note interfacing between TTL and CMOS Ics   5

SECTION: B

2    a.    Define the radix of a number system    2
    b.    Convert the following from Binary to Decimal number system    8
        (i) 11001001 (ii) 1110.1111
        (iii) 11001111 -->( )h   (iv) 1AF--> ( ) D
    c.    Subtract the following using 2's complemnet method
        (i) 1FE2- 0AC2            (ii) 412.6 - 255.0    5

3    a.    Convert the following gray code to binary code (i) 110101 (ii) 111110     2
    b.    Convert the following Excess-3 code to binary code (i) 11011 (ii) 10110   3
    c.    Differentiate analog and digital signals                                                          5
    d.     Expalin AND logic with symbol, logic expression and truth table, .             5

4    a.    Define Noise Margin and power dissipation with reference to logic families 4
    b.    State Associative and Distributive laws of Boolean Algebra                       4
    c.    Simplfy the following expressions and realize the same using gates
        (i) A+(BC.(D+E)+ B))     (ii) (A+B).(C+D).(AB+CD)                     7

SECTION: C

5    a.    What is a Full adder? Use K- map to derive logic expressions for its output    7
    b . Compare serial and parallel adders   3
    c . Explain the operation of 4-bit parallel adder      5

6    a . What is a priority encoder?   2
    b.    Write the logic circuit and truth table of Decimal to BCD encoder   8
    c.    Write the logic circuit and truth table of BCD to seven segment decoder for common
         anode display                    5
7    a.    What is a multiplexer?                                          2
    b    Explain the 8:1 multiplexer with the help truth table and logic circuit      6
    c . What is the use of De-multiplexer? Write the truth table and logic circuit of
           4:1 De-multiplexer       7

SECTION: D

8    a.     Differentiate between combinational and seqential circuits         3
    b . Explain the operation of clocked RS-FF using NAND gates         6
    c.    What is meant by Race around condition? How it is overcome?    7

9    a . Explain the logic diagram, truth table and timing diagram,
       the operation of 4-bit ripple counter      8
    b.    What do you by modulus of counter?       2
    c . Explain how decoding gates can be used for construction of mod-11 counter   5

10    a . Explain with logic diagram, truth table and timing diagram,
              the operation of a 4-bit shift counter 8
    b.    Write the logic diagram of a 4-bit shift register.
           Write the truth table and timing diagram for a 4-bit SISO register for a data of 1011 ( 7 )

Friday 2 December 2011

HTML Tutorial - 13

How to create a mixed frameset of rows and columns in Html Script ?

Solution :
Step 1: Go to Notepad.
Step 2: Copy the HTML script below to the notepad.

Step 3: Now save the file with .html format.
Step 4: Close the notepad and now open the saved file in your default browser .
That's it !
You will see like the below picture in your browser.

Mixed Frame sets in rows and columns

Model question paper of ELECTRONIC MEASUREMENTS AND INSTRUMENTATION of Diploma 3rd Sem - E & CE

DERARTMENT OF TECHNICAL EDUCATION

DIPLOMA COURSE IN ELECTRONICS & COMMUNICATION ENGG.

THIRD SEMESTER

ELECTRONIC MEASUREMENTS AND INSTRUMENTATION

MODEL QUESTION PAPER

MAX MARKS:100 TIME :3Hrs

INSTRUCTIONS:-
1) SECTION-I IS COMPULSORY
2 ) ANSWER ANY TWO FULL QUESTIONS FROM EACH OF THE REMAINING
    SECTIONS.

SECTION –I

1(a) Fill in the Blanks 5 X 1 = 5

1. Wein bridge is normally used for the measurement of ________

2. An example of inverse transducer is__________.

3. _________coating is used to collect secondary electrons in CRT.

4. The standards maintained at National standard labs are called ________

5. Errors due to human mistakes are called ____________.

(b) Write a note on IEEE488 GPIB interfacing. 5

SECTION-II

2 (a) Explain with a block diagram, the operation of a generalized electronic

measurement system. 9

(b) Define (i) accuracy (ii) Precision (iii) Error w.r.t measurements 6

3(a) A 0-100Volt Voltmeter has an accuracy of 1% of full scale reading.
If the voltage measured by this instrument is 83 volts, find the limiting error in percentage 5

(b) Explain the use of wein's bridge in frequency measurement.
Derive the equation for unknown frequency. 10

4(a) Explain the operation of the basic PMMC movement . 7

(b) Explain the basic principle of Electrodynamometer . 6

SECTION-III

5(a) With the help of a block diagram, explain the operation of Digital Storage

Oscilloscope. 9

(b) What are lissajous patterns?. Explain how they can be used for phase difference

measurement. 6

6(a) Explain the working of Heterodyne wave analyzer. 6

(b) list the uses of Spectrum analyzer. 3

7(a) Explain the principle of LVDT displacement transducer. 6

(b) List the advantages and disadvantages of thermistors. 4

SECTION-IV

8(a) Explain the working of Chopper DC amplifier type voltmeter. 7

(b) Explain the operation of Q meter. 8

9(a) Explain the working of Successive approximation type DVM. 10

(b) List the advantages of digital instruments. 5

10(a) Explain the principle of digital time interval measurement. 5

(b) List the precautions to prevent instrument damage. 5

(c)Write a note on shielding. 5

Model question paper of Digital Electronics of Diploma 3rd Sem - E & CE

DERARTMENT OF TECHNICAL EDUCATION

DIPLOMA COURSE IN ELECTRONICS & COMMUNICATION ENGG.

THIRD SEMESTER

MODEL QUESTION PAPER

Digital Electronics and Introduction to Microprocessor

MAX MARKS:100 TIME :3Hrs

INSTRUCTIONS:-
1    SECTION-I IS COMPULSORY
2    ANSWER ANY TWO FULL QUESTIONS FROM EACH OF THE REMAINING
    SECTIONS.

SECTION: I

1    a    Fill in the blanks with suitable words                                      1X5
    (i)    The number of comparators required to build an 8-bit flash
        ADC is--------------
    (ii)    Register which keeps track of instruction execution is---------
    (iii)    MC68000 is a ---------- bit processor
    (iv)    RISC stands for ----------
    (v)    A basic memory cell in a DRAM is ----------

    b    Write a note on Generic Array Logic      5

SECTION: II

2    a    Explain the circuit operation of TTL Nand gate for low and
        high state      10
    b    What three characteristics of real wires add up to distort
        signals that move through them                                        3
    c    What is the IEEE/ANSI symbol for tristate outputs     2

3    a    Explain the working of Binary ladder network for converting
        the digital to analog data                                                                8
    b    Define the terms Resolution & Accuracy as applied to DAC    4
    c    Determine the resolution of a 12-bit A/D converter having a
        full scale analog input voltage of 5v.                                             3

4    a    Explain the working of Successive approximation type ADC
        with block diagram     8
        the digital to analog data
    b    Define quantization error in ADC’s    3
    c    Explain the working of low frequency function generator using
        DAC              4
                                                                          SECTION: III

5    a    Define the terms i) memry cell ii) memory word iii) Access
        time     6
    b    With A CPU memory connection block diagram explain the
        steps that take place when the CPU writes to memory    6
    c    Explain the construction of basic SRAM memory cell    3

6    a    Two 16MB RAMs are used to build a RAM capacity of 32MB.
        Show the configuration and also state the address inputs for
        which the two RAMs will be active. The two RAMs have
        common i/o pins, a write enable i/p that is active low and a
        active high chip select i/p.       8
    b    Write a note on Cache memories    4
    c    mention the differences between fixed logic and
        programmable logic                           3

7    a    With neat block diagram explain the internal architecture of
        CPLD    8
    b    Implement the Boolean function Y= BC+ A C+ABC using
        PAL    5
    c    Mention the number of i/o lines in PAL device designated as
        PAL-16L8    2

                                         SECTION: IV

8    a     Explain the inside of a Microprocessor with a neat schematic    7
    b    Explain the following addressing modes i) Immediate
        ii) Indexed    04
    c    List the differences between RISC and CISC processors    4

9   a    List the differences between Microprocessor and
        Microcontroller                                                                   4

    b    Explain the inside of a Microcontroller with a neat schematic    7
    c    List the advantages and disadvantages of LCD    4


10    a    Explain the operation of seven segment display.    6

b Explain the operation dynamic scattering type of LCD. 6

c Write a note on multiplexed displays. 3