Digital Electronics - Vol 1 | 7. Arithmetic Circuits - Part C by Abraham | Learn Smarter
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7. Arithmetic Circuits - Part C

The chapter discusses various essential digital electronics components, focusing on the arithmetic logic unit (ALU), multiplication techniques, magnitude comparators, and their cascading arrangement. It highlights the importance of these circuits in performing arithmetic operations and comparisons, primarily using integrated circuits (ICs) to simplify designs while addressing trade-offs in hardware vs. software implementations.

Sections

  • 7.7

    Arithmetic Logic Unit (Alu)

    The Arithmetic Logic Unit (ALU) is a key component in digital electronics responsible for performing both arithmetic and logic operations.

  • 7.8

    Multipliers

    This section describes how binary multiplication is implemented in digital systems using repeated addition and shifting operations, detailing the hardware configurations typical in multipliers.

  • 7.9

    Magnitude Comparator

    A magnitude comparator is a combinational circuit that compares two numbers and determines their relational magnitude.

  • 7.9.1

    Cascading Magnitude Comparators

    This section explains the method of cascading magnitude comparators to compare multi-bit numbers effectively.

  • 7.10

    Application-Relevant Information

    This section provides an overview of commonly used integrated circuit (IC) type numbers for arithmetic operations, including available resources for further details.

  • 7.11

    Review Questions

    This section poses a series of review questions designed to consolidate understanding of key concepts from the chapter related to digital circuits and arithmetic logic.

  • 1

    How Do You Characterize Or Define A Combinational Circuit?... Examples...

    Combinational circuits perform specific logic functions based on input values without relying on past input, contrasting with sequential circuits that are memory-based.

  • 2

    Beginning With The Statement Of The Problem, Outline Different Steps...

    This section discusses the design process of combinational logic circuits, specifically focusing on the arithmetic logic unit (ALU), multipliers, and magnitude comparators.

  • 3

    Write Down Boolean Expressions Representing The Sum And Carry Outputs...

    This section covers the derivation of Boolean expressions for SUM and CARRY outputs of a full adder in terms of three input binary variables.

  • 4

    Draw The Truth Table Of A Full Subtractor Circuit...

    This section focuses on the construction of the truth table for a full subtractor circuit, detailing its inputs and outputs.

  • 5

    Draw The Logic Diagram Of A Three-Digit Bcd Adder And Briefly Describe...

    This section discusses the design and operation of a three-digit BCD adder, including its logic diagram.

  • 6

    Briefly Describe The Concept Of Look-Ahead Carry Generation...

  • 7

    With The Help Of A Block Schematic, Describe How Individual Four-Bit...

  • 7.12

    Problems

    This section covers various problems related to arithmetic logic units, multipliers, and magnitude comparators in digital electronics.

  • 1

    Determine The Bit Status Of D And B For A, B, B_in...

    This section covers the determination of the outputs D (DIFFERENCE) and B_out (BORROW-OUT) in a full subtractor using binary inputs.

  • 2

    Determine The Number Of Half And Full Adder Circuit Blocks...

  • 3

    Prove That The Sum Output Of The Full Adder Will Produce...

    This section outlines the operational mechanisms of a full adder and proves how its SUM output effectively produces the correct result.

  • 4

    Prove That The Logic Diagram Performs The Function Of A Half-Subtractor...

    This section covers the function and functioning of a half-subtractor circuit in digital electronics, including its logic diagram and mathematical proof.

  • 5

    Determine The Number Of 7483s And 7486s Required To Design A 16-Bit...

    This section describes the requirements for designing a 16-bit adder-subtractor circuit using a specific number of ICs: the 7483 four-bit binary adder and the 7486 quad two-input XOR gate.

  • 6

    Design A Bcd Adder Circuit Using Four-Bit Binary Adders...

    The section discusses the design and implementation of a BCD adder circuit using four-bit binary adders and additional combinational logic.

  • 7.13

    Further Reading

    This section provides a list of references for deeper exploration of digital electronics, particularly focused on arithmetic operations and logic circuits.

  • 1

    Koren, I. (2001) Computer Arithmetic Algorithms...

    This section introduces fundamental components of digital logic, including the Arithmetic Logic Unit (ALU), binary multipliers, and magnitude comparators, emphasizing their design and operation within integrated circuits (ICs).

  • 2

    Ercegovac, M. D. And Lang, T. (2003) Digital Arithmetic...

  • 3

    Rafiquzzaman, M. (2005) Fundamentals Of Digital Logic...

    This section discusses key digital circuit components including the Arithmetic Logic Unit (ALU), binary multipliers, and magnitude comparators.

  • 4

    Morris Mano, M. And Kime, C. R. (2003) Logic And Computer Design...

    This section covers the design and functionality of key digital components such as the Arithmetic Logic Unit (ALU), multipliers, and magnitude comparators in digital electronics.

  • 5

    Tokheim, R. L. (1994) Schaum’s Outline Series Of Digital Principles...

    This section covers essential digital circuits including the Arithmetic Logic Unit (ALU), multipliers, and magnitude comparators, explaining their functionalities and applications in digital electronics.

  • 6

    Tocci, R. J. (2006) Digital Systems – Principles And Applications...

    This section dives into the functionality and importance of Arithmetic Logic Units (ALUs), binary multipliers, and magnitude comparators in the realm of digital electronics.

  • 7

    Malvino, A. P. And Leach, D. P. (1994) Digital Principles And Applications...

    This section explains the fundamental components of digital electronics, specifically focusing on the arithmetic logic unit (ALU), binary multipliers, and magnitude comparators.

Class Notes

Memorization

What we have learnt

  • The arithmetic logic unit (...
  • Binary multipliers employ r...
  • Magnitude comparators compa...

Final Test

Revision Tests