Digital Electronics Logic Design ( EX-403 )

( EX- 4th Sem )

Digital Electronics Logic Design

Course Outcomes

After Completion of this Course students will:

  • Understand concepts of Digital System Design.
  • Understand concepts of all types of number systems and their conversions.
  • Understand concepts of various laws and theorems related to the number system used in digital circuits.
  • Understand concepts of combinational circuits and their logic diagrams.
  • Understand concepts of various types of sequential circuits, their characteristic equations and applications.
  • Understand concepts of counters and regsiters, their application, circiut and all.
  • Understand Concepts of types of memory used in digital circuits.

Course Content

Main Contents of this course which students needs to learn are:

  • Number Systems and Codes: Digital number systems, base conversion, Binary, Decimal, octal, Hexadecimal, number system with radix r, Gray codes.Alphanumeric codes – ASCII code and BCD codes, concept of parity, complementr’s& (r-1)’s, subtraction with complements, signed Binary numbers, Error Detecting & Correcting codes. Basic Theorems & Properties of Boolean algebra: AND, OR, NOT operators, laws of Boolean algebra, Demorgon’s theorem, Boolean expression & logic diagram. Negative logic, Alternate logic gate representation (concept of bubbled gates) canonical and standard Forms (Minterms&Maxterms), sum of minterms& product of maxterms, conversion between canonical forms. Truth table & maps, 2,3,4,5 and 6 variable maps, solving digital problems using Maps, Don’t care conditions, Tabular minimization. Sum of product & product of sum reduction, Exclusive OR & Exclusive NOR circuits, Parity generator &checkers.
  • Combinational Circuits: Design procedure, Adders (half and Full), subtractor (half and full) code convertors, Analysis of design, Universal building blocks, Implementation of any logic circuit with only NAND gates or with only NOR gates, Binary serial adder, parallel adder, serial/parallel adder, look ahead carry generator, BCD adder, Binary multiplier, Magnitude comparator, Decoder, Demultiplexer, Encoders, priority encoder, Multiplexers & implementation of combinational logic diagram.
  • Sequential Logic Circuit: Latches, SR latch with NAND & NOR gates, D latch, edge triggered flip flop, J-K flip flop, T flip flop, Master slave flip flop, Analysis of clocked sequential circuit, state table, state diagram, state reduction state equations, state assignments, flip flop excitation table & characteristic equations, Design procedure for sequential circuits, Design with state reduction, Applications of flipflop.
  • Registers and Counters: Asynchronous and Synchronous counter, counters with MOD numbers, Down counter, UP/DOWN counter, propagation delay in ripple counter, programmable counter, Pre- settable counter, BCD counter, cascading, counter applications, Decoding in counter, Decoding glitches, Ring Counter, Johnson counter, Rotate left & Rotate right counter, Registers – Buffer, Shift left, shift right, shift left/Right registers, parallel in parallel out, serial in serial out, parallel in serial out, serial in parallel out registers.
  • Random Access Memory, Timing waveform, Memory Decoding, Internal Construction, Coincident decoding, Address multiplexing, Read only memory – Combinational circuit implementation, Type of ROMs, combinational PLDs, Programmable Logic Array (PLA), Programmable Array Logic (PAL), sequential programmable device. Analog to digital conversion – Ramp type, dual slope, integration, successive approximation, parallel conversion, parallel/ serial conversion, convertor specifications, Digital to Analog convertors – Binary weighted & R/2R D to A convertors.

Book References

Some books which will help you to learn this course:

  • A. Anand Kumar, Fundamentals of digital circuits, PHI
  • A K Maini, Digital Electronics, Wiley India
  • Thomas Blakeslee; Digital Design with standard MSI and LSI; Wiley Interscience
  • Jain RP; Modern digital electronics; TMH
  • M Mano; Digital Logic & Computer design; PHI
  • Tocci ; Digital Systems Principle & applications; Pearson EducationAsia
  • Gothmann; Digital Electronics;PHI
  • Malvino, Leech; Digital Principles and applications–(TMH)
  • Floyad; Digital Fundamentals(UBS)
  • Nripendra N. Biswas; Logic Design Theory(PHI)
  • D.C. Green; Digital Electronics (Pearson EducationAsia)
  • SubrataGhoshal; Digital Electronics, Cengage

List of Experiments

  • Verification of all the logicgates.
  • Design of BCD to Excess-3 codeconverter.
  • Implementation of NAND & NOR as Universalgate.
  • Design of RS, JK, T& D Flipflop.
  • Multiplexer /Demultipexer based boolean function.
  • Design of combinational circuit for the.
    1. Half adder
    2. Full adder
    3. Half subtractor
    4. Full subtractor
  • Design various A-D & D-Aconvertors.
  • Verify the truth table of SR flip flop.
  • Verify BCD to seven segment decoder.

Experiment Notes

Cousre Notes

For "Course Notes" you can refer our Notes Section for 2nd Year( Click Here )

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    • Sneh College Academy
    Author- Sneh
    ( Core Member )