Number Systems and Conversions Quiz
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Questions and Answers

Convert the decimal number 26110 to hexadecimal. What is the correct hexadecimal representation?

  • 1B5h
  • 105h (correct)
  • FFh
  • 16h
  • What is the binary equivalent of the hexadecimal value A3C5H?

  • 1100 1000 1101 1101B
  • 1010 0011 1100 0101B (correct)
  • 1010 0111 1100 0101B
  • 1010 0011 0100 0101B
  • Which of the following represents the octal number 247 in hexadecimal?

  • A7H (correct)
  • 016H
  • A6H
  • 009H
  • What is the octal representation of the decimal number 48710?

    <p>7478 (B)</p> Signup and view all the answers

    Convert the binary number 10001011001011B to hexadecimal. What is the resulting hexadecimal value?

    <p>2CBH (B)</p> Signup and view all the answers

    What is the fractional hexadecimal equivalent for the decimal number 36.5328?

    <p>1E.AD16 (D)</p> Signup and view all the answers

    If the binary number 10110B is converted to decimal, what is the resulting decimal value?

    <p>22 (D)</p> Signup and view all the answers

    What is the 10's complement of the decimal number 23450?

    <p>76550 (B)</p> Signup and view all the answers

    In converting the fractional part 0.6875 to binary, what binary representation is obtained?

    <p>.1011 (D)</p> Signup and view all the answers

    Using 9's complement subtraction, what would be the result of subtracting 1000 from 1234?

    <p>234 (C)</p> Signup and view all the answers

    What is the 2's complement of the binary number 1011001?

    <p>0100111 (C)</p> Signup and view all the answers

    Which of the following represents the 16's complement of the hex number 4A30?

    <p>B5D0 (D)</p> Signup and view all the answers

    What is the correct method to find 9's complement for the number 23450?

    <p>99999 - 23450 (A)</p> Signup and view all the answers

    When performing 10's complement subtraction of 3000 from 1234, what is the correct answer?

    <p>-1766 (A)</p> Signup and view all the answers

    What will be the 4's complement of the decimal number 224?

    <p>220 (D)</p> Signup and view all the answers

    What is the result of applying De Morgan's theorem to the expression (A + B + C)'?

    <p>A' + B' + C' (D)</p> Signup and view all the answers

    In simplifying the expression a.b + a.(b + c) + b.(b + c), which property is utilized when reducing b.b to 0?

    <p>Complementarity (A)</p> Signup and view all the answers

    Which form is NOT a canonical form as mentioned in the content?

    <p>Mixed Product and Sum (MPS) (B)</p> Signup and view all the answers

    What is the simplified form of the expression A'B'C + A'BC + AB'?

    <p>A'C + AB' (A)</p> Signup and view all the answers

    When simplifying the function F = AB + (AC)' + AB'C(AB + C), which step eliminates AB or C permanently as contributing factors?

    <p>Applying Absorption (D)</p> Signup and view all the answers

    What does the additive inverse define in arithmetic operations?

    <p>Subtraction (C)</p> Signup and view all the answers

    Which of the following correctly represents the multiplication identity property?

    <p>A * 1 = A (C)</p> Signup and view all the answers

    According to the distributive law, which expression is equivalent to A * (B + C)?

    <p>A * B + A * C (A)</p> Signup and view all the answers

    What does Theorem 4(Associative) indicate about addition?

    <p>A + (B + C) = (A + B) + C (A)</p> Signup and view all the answers

    In De Morgan’s Theorems, what does (A.B)′ equal?

    <p>A' + B' (A)</p> Signup and view all the answers

    What is the result of applying Theorem 2(b): A * 0?

    <p>0 (B)</p> Signup and view all the answers

    Which of the following statements is accurate regarding the properties discussed?

    <p>A + A = A (C)</p> Signup and view all the answers

    What is the complementary result of A + A' based on Postulate 5?

    <p>1 (C)</p> Signup and view all the answers

    Based on Theorem 6(b), what does A.(A + B) equal?

    <p>A (C)</p> Signup and view all the answers

    What does the Involution theorem state about negation and double negation?

    <p>(A')' = A (A)</p> Signup and view all the answers

    What is the primary function of a diode array in electronic circuits?

    <p>To dissipate and divert surge voltages (D)</p> Signup and view all the answers

    Which type of IC classification would include devices with 10,000 to 99,999 circuits?

    <p>VLSI (A)</p> Signup and view all the answers

    What is a disadvantage of integrated circuits (ICs) mentioned in the context?

    <p>Coils or inductors cannot be fabricated within them (B)</p> Signup and view all the answers

    Which of the following best describes monolithic ICs?

    <p>ICs fabricated within a single continuous piece of silicon (B)</p> Signup and view all the answers

    Which attribute is NOT associated with diode arrays?

    <p>Very high clamping voltage (B)</p> Signup and view all the answers

    In the context of scale of integration, which category handles 100 to 9,999 circuits?

    <p>LSI (A)</p> Signup and view all the answers

    Which of these is a merit of ICs?

    <p>Reduced cost of production (A)</p> Signup and view all the answers

    Which type of IC is formed by inter-connecting individual chips?

    <p>Hybrid ICs (B)</p> Signup and view all the answers

    What maximum number of components can ULSI ICs handle?

    <p>10,000,000 (B)</p> Signup and view all the answers

    Which statement about digital logic ICs does NOT hold true?

    <p>They are immune to electrostatic discharge. (C)</p> Signup and view all the answers

    Flashcards

    Decimal to Hexadecimal

    Converting a number from decimal (base-10) to hexadecimal (base-16) involves repeatedly dividing the decimal number by 16 and keeping track of the remainders. Each remainder represents a hexadecimal digit.

    Binary to Decimal

    To convert a binary number to decimal, multiply each digit by its corresponding power of 2 and sum the results. The powers of 2 start from the rightmost digit and increase by 1 for each digit to the left.

    Decimal to Octal

    Converting decimal to octal involves repeatedly dividing the decimal number by 8 and keeping track of the remainders. Each remainder represents an octal digit.

    Binary to Hexadecimal

    To convert a binary number to hexadecimal, group the binary digits into sets of 4, starting from the rightmost digit. Each group of 4 bits represents a hexadecimal digit.

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    Hexadecimal to Binary

    Converting a hexadecimal number to binary involves converting each hexadecimal digit to its 4-bit binary equivalent.

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    Hexadecimal to Octal

    To convert a hexadecimal number to octal, group the hexadecimal digits into sets of 3 (starting from the right), with padding as needed. Then, convert each group of 3 bits to its octal equivalent.

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    Octal to Hexadecimal

    To convert an octal number to hexadecimal, group the octal digits into sets of 3 (starting from the right). Replace each group with its 4-bit binary equivalent. Then, group the resulting binary sequence into sets of 4 from the right to covert each group to its hexadecimal equivalent.

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    De Morgan's Theorem

    A mathematical theorem that simplifies logical expressions by manipulating AND, OR, and NOT operators.

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    Product Term

    A logical expression where variables are combined using only AND operations. Individual variables can be negated.

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    Sum Term

    A logical expression where variables are combined using only OR operations. Individual variables can be negated.

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    Sum of Products (SOP)

    A combination of product terms connected by OR operators. Each product term represents a specific combination of inputs that results in a TRUE output.

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    Product of Sums (POS)

    A combination of sum terms connected by AND operators. Each sum term represents a specific combination of inputs that results in a FALSE output.

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    What is a semiconductor diode?

    A semiconductor diode is a two-terminal electronic device that allows current to flow in only one direction. It is a fundamental component in many electronic circuits, serving as a switch, rectifier, and more.

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    What is the difference between a diode and a rectifier?

    The term "diode" usually refers to small signal devices, typically handling currents less than 1 Ampere. Larger currents, exceeding 1 Ampere, are usually handled by rectifiers.

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    What is a diode array?

    A diode array is a series of diodes connected together to form a single functional unit. These arrays offer advantages over individual diodes for several applications.

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    How do diode arrays protect electronic circuits?

    Diode arrays can protect electronic circuits from surge voltages. These sudden voltage spikes can damage sensitive components.

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    What are Integrated Circuits (ICs)?

    Integrated Circuits (ICs) are complete electronic circuits that combine both active (e.g., transistors) and passive (e.g., resistors) components on a single silicon chip.

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    What are the advantages and disadvantages of ICs?

    ICs offer many advantages over traditional circuits, such as smaller size, lower cost, higher reliability, and faster response times. However, they also have limitations like limited power handling and susceptibility to heat.

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    What is SSI (Small-Scale Integration)?

    SSI (Small Scale Integration) is a type of IC that contains a small number of circuits, typically less than 12, and less than 50 components.

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    What is MSI (Medium Scale Integration)?

    MSI (Medium Scale Integration) is a type of IC that contains a moderate number of circuits, typically between 13 and 99, and up to 500 components.

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    What is LSI (Large Scale Integration)?

    LSI (Large Scale Integration) is a type of IC that contains a significant number of circuits, typically between 100 and 9,999, and up to 100,000 components.

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    What is VLSI (Very Large Scale Integration)?

    VLSI (Very Large Scale Integration) is a type of IC that contains a massive number of circuits, typically between 10,000 and 99,999, and up to 1,000,000 components.

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    Additive Identity

    The value that when added to any element in a set leaves that element unchanged. In Boolean algebra, this is represented by '0'.

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    Additive Inverse

    The value that, when added to an element, results in the additive identity (0). In essence, it represents the 'opposite' of an element. In Boolean algebra, it's denoted by 'A' with a prime mark 'A''.

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    Multiplicative Identity

    The value that when multiplied by any element in a set leaves that element unchanged. In Boolean algebra, this is represented by '1'.

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    Multiplicative Inverse

    The value that, when multiplied by an element, results in the multiplicative identity (1). In Boolean algebra, it's denoted by '1/A'.

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    Distributive Law

    A rule that allows you to distribute multiplication over addition. In Boolean algebra, it's written as A.(B+C) = (A.B) + (A.C).

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    Postulate

    A statement that is assumed to be true without proof.

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    Theorem

    A statement that is proven to be true based on postulates and previously proven theorems.

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    De Morgan's Theorem (Part 1)

    A theorem that states that the complement of a product is equal to the sum of the complements. In Boolean algebra, this is expressed as (A.B)' = A' + B'.

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    De Morgan's Theorem (Part 2)

    A theorem that states that the complement of a sum is equal to the product of the complements. In Boolean algebra, this is expressed as (A+B)' = A'.B'.

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    Absorption Law

    A property in Boolean algebra that allows for simplification of expressions. It states that A + A.B = A and A.(A+B) = A.

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    2's Complement

    The 2's complement of a binary number is found by inverting all the bits (changing 0s to 1s and 1s to 0s) and then adding 1.

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    10's Complement

    The 10's complement of a decimal number is calculated by subtracting the original number from the next higher power of 10. Alternatively, you can find the 9's complement (all digits subtracted from 9) and add 1.

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    16's Complement

    The 16's Complement of a hexadecimal number is found by subtracting the hexadecimal number from the next higher power of 16 (in this case, 16^2 = 256).

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    9's Complement

    The 9's complement of a decimal number is found by subtracting each digit from 9. In essence, you create a mirrored image of the number using 9s.

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    R's and (R-1)'s Complement

    The R's complement of any number is calculated by subtracting the number from the highest possible digit (represented by R) raised to the power of the bits in the number. The (R-1)'s complement of a number is found by subtracting the number from (R^n - 1).

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    9's Complement Subtraction

    Subtracting a number using the 9's complement involves finding the 9's complement of the subtrahend (the number being subtracted) and then adding it to the minuend (the number being subtracted from). The carry-over is added to the result to get the final answer.

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    10's Complement Subtraction

    Subtracting using the 10's complement involves finding the 10's complement of the subtrahend and then adding it to the minuend. If there is a carry, it is discarded, and the remaining result is the answer.

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    8's Complement

    The 8's complement of a binary number is calculated by subtracting the number from the nearest higher power of 2. You can also get the 7's complement by subtracting each bit from 7 and then adding 1 to find the 8's complement.

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    Binary Representation

    A binary representation of a decimal number can be obtained by converting the integer part and the fractional part separately. The integer part is converted directly using base-2 conversion, and the fractional part uses repeated multiplication by 2. The whole number part obtained from each multiplication represents the next bit in the binary representation.

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    Study Notes

    Course Information

    • Course Title: Digital Logic Design
    • Course Code: IFT 211

    Number Systems

    • Computers use the binary (base 2) number system
    • Binary numbers are represented using 0s and 1s
    • Other number systems include octal (base 8) and hexadecimal (base 16)
    • These are used as a shorthand or compact form for representing binary numbers

    Binary (Base 2) Number System

    • Examples of converting binary to decimal
    • 10110₂ = 1×2⁴ + 0×2³ + 1×2² + 1×2¹ + 0×2⁰ = 22₁₀

    Decimal (Base 10) Number System

    • Example of converting decimal to decimal
    • 735₁₀ = 7×10² + 3×10¹ + 5×10⁰ = 700 + 30 + 5 = 735₁₀

    Hexadecimal (Base 16) Number System

    • Example of converting hexadecimal to decimal
    • A3EH₁₆ = 10×16² + 3×16¹ + 14×16⁰ = 2560 + 48 + 14 = 2622₁₀

    Binary-Decimal-Hexadecimal Conversion Table

    • A table converting hexadecimal, binary and decimal equivalent values.

    Decimal to Binary Conversion

    • Example: Converting decimal 211 to binary
    • 2¹⁰⁵₁₀ = 11010011₂

    Decimal to Hexadecimal Conversion

    • Example: Converting decimal 261 to hexadecimal.
    • 261₁₀ = 105₁₆

    Binary to Decimal Conversion

    • Example: Converting binary 10110₂ to decimal. 10110₂ = 1×2⁴ + 0×2³ + 1×2² + 1×2¹ + 0×2⁰ = 22₁₀

    Decimal to Octal Conversion

    • Example: Converting decimal 487 to octal
    • 487₁₀ = 747₈

    Binary to Hexadecimal Conversion

    • Example: Converting binary 1001001010₂ to hexadecimal
    • 1001001010₂ = 24AH₁₆

    Hexadecimal to Binary Conversion

    • Example: Converting hexadecimal A3C5H to binary
    • A3C5₁₆ = 1010 0011 1100 0101₂

    Hexadecimal to Octal Conversion

    • Example: Converting hexadecimal A72E₁₆ to octal.
    • A72E₁₆ = 123456₈

    Octal to Hexadecimal Conversion

    • Example: Converting octal 247₈ to hexadecimal.
    • 247₈ = A7₁₆

    10's Complement

    • Example: Finding the 10's complement of 23.234
    • 23.234 ten's complement = 76.676

    9's Complement

    • Example: Finding the 9's complement of 23450₁₀
    • 9's complement of 23450₁₀ = 76549₁₀

    8's Complement

    • Example: Finding the 8's complement of 2450₈
    • 8's complement of 2450₈ = 5330₈

    16's Complement

    • Example: Finding the 16's complement of 4A30₁₆
    • 16's complement of 4A30₁₆ = B5D0₁₆

    R's and R-1 Compliments

    • Formulas for R's complement and (R-1) complement.
    • Example showing converting 1011001₁₀ to 2's complement, based on above formula

    2's complement of Hexadecimal

    • Technique to find 2's complement for a given value in hexadecimal

    Complements

    • Example showing 4's complement, 5's complement, 9's complement, and 10's complement calculation

    9's Complement Subtraction

    • Example: Subtracting 1000 from 1234 using 9's complement method
    • 1234 + 8999 = 10233 - 1 = 234

    10's Complement Subtraction

    • Example of subtracting 1000 from 1234 using 10's complement method

    Circuit diagrams

    • Examples of circuit diagrams for various digital circuits

    Binary Codes

    • Binary code representation and weighted binary codes, e.g., BCD
    • Excess-3 code examples

    BCD Code

    • Example of decimal to BCD conversion
    • 85₁₀= 1000 0101 (BCD)
    • 572₁₀= 0101 0111 0010 (BCD)
    • 8579₁₀ = 1000 0101 0111 1001 (BCD)

    BCD to Decimal Conversion

    • Example: Converting 1001₂ to decimal. 1001₂ = 9₁₀

    Excess-3 Code

    • Calculation example to convert 15 to an excess-3 code, where 3 is added to each digit.
    • Example conversion of 237.75₁₀ to excess-3 code
    • Example: Calculation, given an excess-3 code, find decimal equivalent, based on above calculation

    Gray Code

    • Gray code representation in a table
    • Conversion examples of converting binary to gray code, based on diagram.
    • Conversion examples of converting gray code to binary, based on diagram

    BCD Addition

    • Example shows how 476 and 394 are to be add using BCD

    Excess-3 Addition

    • Example shows how 45 and 38 are to be added using Excess-3 code

    Don't-care Combination

    • Concept of don't-care conditions in digital systems
    • Example showing how don't-care conditions are shown in a K-map to simplify a given function

    K-maps

    • Explanation of Karnaugh maps for simplifying Boolean expression
    • Example of K-maps simplifying various Boolean expressiion

    Sequential Circuits

    • Diagram showing the blocks of a sequential circuit.
    • Explanation of bistable and synchronous/asynchronous system

    Latches

    • Diagrams showing SR latch designs using NOR gates.

    Flip-Flops

    • Diagrams showing flip-flop designs using NAND gates, SR, JK, D and T flip-flops (constructions and truth table)

    Designing Combinatorial Circuits

    • Steps in designing combinatorial circuitry (i.e. obtaining a Boolean expression)
    • Example and implementation, based on the calculation steps.

    Half Adder

    • Example of half adder truth table, its equation, and implementation of sum using XOR logic.

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    Description

    Test your understanding of various number systems including decimal, hexadecimal, binary, and octal. This quiz explores conversions between these systems and covers topics like 9's and 2's complements. Perfect for students in math or computer science courses.

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