Internal Storage and Data Representation Quiz
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Questions and Answers

What is the smallest unit of information that can be stored in a computer?

  • Nibble
  • Bit (correct)
  • Word
  • Byte

    • Which of the following represents the hexadecimal number for decimal 255?

  • 00
  • F0
  • FF (correct)
  • 1FF

    • How many bits are in a word?

  • 8
  • 16 (correct)
  • 64
  • 32

    • What is the binary equivalent of decimal 58?

    <p>111010</p> Signup and view all the answers

    Which data type does NOT typically use binary representation?

    <p>Physical objects</p> Signup and view all the answers

    What is a nibble equivalent to in bits?

    <p>4 bits</p> Signup and view all the answers

    When converting 0.859375 from decimal to binary, what is the first digit after the binary point?

    <p>1</p> Signup and view all the answers

    What is the primary purpose of using files in programming?

    <p>To permanently store and retrieve information</p> Signup and view all the answers

    Which statement correctly describes a record?

    <p>Records are collections of fields that may have different data types.</p> Signup and view all the answers

    In record declaration, which syntax is correct for defining fields?

    <p>Field1: type; Field2: type;</p> Signup and view all the answers

    Which of the following best represents a customer record as described?

    <p>VAR customer: customer_number: integer; customer_account: char; customer_balance: real END</p> Signup and view all the answers

    Which of the following statements about fields in a record is incorrect?

    <p>Fields cannot be of a fixed number and sequence in a record.</p> Signup and view all the answers

    What is the primary purpose of using floating point representation in computing?

    <p>To describe real numbers with a wide range of values</p> Signup and view all the answers

    What does the leftmost bit signify in binary representation of negative numbers?

    <p>The sign of the number</p> Signup and view all the answers

    Which operation correctly defines how to obtain the one’s complement of a binary number?

    <p>Invert all the bits in the binary representation</p> Signup and view all the answers

    When performing binary subtraction using one’s complement, what step follows after finding the inverse of the second number?

    <p>Add the first number to the inverted second number</p> Signup and view all the answers

    How is two’s complement calculated from one’s complement?

    <p>By adding one to the one’s complement</p> Signup and view all the answers

    What result does the one’s complement of the binary number 01001001 yield?

    <p>10110101</p> Signup and view all the answers

    What is the output when dividing the binary number 10000 by 1000?

    <p>10</p> Signup and view all the answers

    When performing floating point arithmetic, how are numbers generally represented?

    <p>By fixed significant digits and an exponent</p> Signup and view all the answers

    What is the binary representation of the decimal number 9?

    <p>1001</p> Signup and view all the answers

    What is the two's complement representation of -3?

    <p>1101</p> Signup and view all the answers

    What result is obtained when computing 5 + (-9) in two's complement?

    <p>-4</p> Signup and view all the answers

    Which step is not part of subtracting 18 from 25 using two's complement?

    <p>Convert 25 to binary.</p> Signup and view all the answers

    What is the one's complement of the binary representation of 18 (10010)?

    <p>11101</p> Signup and view all the answers

    What is the decimal value of the two's complement representation for the binary number 0111?

    <p>7</p> Signup and view all the answers

    What binary number is formed when 11 is added to the two's complement of -18?

    <p>10010</p> Signup and view all the answers

    Which of the following correctly describes the two's complement?

    <p>It allows for both addition and subtraction.</p> Signup and view all the answers

    How is the two's complement of a binary number calculated?

    <p>Invert the bits and add 1.</p> Signup and view all the answers

    What character coding method uses groups of binary to represent each character?

    <p>ASCII</p> Signup and view all the answers

    What does EBCDIC stand for?

    <p>Extended Binary Coded Decimal Interchange Code</p> Signup and view all the answers

    Which bit structure is used in EBCDIC to represent each character?

    <p>8 bits</p> Signup and view all the answers

    What is the total number of characters that EBCDIC can represent?

    <p>256</p> Signup and view all the answers

    How are the eight bits in EBCDIC divided?

    <p>Two zones—Zone bit and Numeric bit</p> Signup and view all the answers

    In EBCDIC, what is the zone bit value for the numeric character '3'?

    <p>1111</p> Signup and view all the answers

    Which range of characters in EBCDIC has the zone bit '1100'?

    <p>A-I</p> Signup and view all the answers

    What is the EBCDIC representation for the numeric value '37'?

    <p>1111001111110111</p> Signup and view all the answers

    Which company developed the EBCDIC code?

    <p>IBM</p> Signup and view all the answers

    What type of systems primarily use EBCDIC?

    <p>Minicomputers and mainframe computers</p> Signup and view all the answers

    What distinguishes EBCDIC from ASCII in terms of character representation?

    <p>EBCDIC can represent more characters than ASCII</p> Signup and view all the answers

    Study Notes

    Internal Storage and Data Representation

    • Computers use 0 and 1 to represent and store all data types
    • Data types include text, numbers, sound, images, and video
    • Internal representation converts data into binary format
    • Binary system uses 0 and 1
    • Octal numbering system is base 8 (0-7)
    • Hexadecimal numbering system is base 16 (0-9, A-F)
    • Character representation uses codes to represent letters, numbers, and symbols
    • Binary addition follows specific rules for adding binary numbers
    • One's complement inverts bits (swaps 0s and 1s)
    • Two's complement adds 1 to the one's complement to represent negative numbers

    Types of Data

    • Data includes text, numbers, sound, images, and video

    Data Representation

    • Numerical information is usually represented in binary form
    • A bit is a binary digit (0 or 1), the smallest unit of information in a computer.
    • Bits combine to form bytes (8 bits)
    • Larger units of storage include kilo-, mega-, giga-, and tera-bytes (powers of 1024)

    Binary Numeral System

    • A number in base-10 can be converted to base-2 using repeated division by 2.
    • A number in base-2 can be converted to base-10 using the position values of the digits in powers of 2.
    • Binary numbers are represented with a subscript "2"
    • Decimal numbers are represented with a subscript "10"

    Conversion from base 10 to base 2 and vice versa

    • Methods for converting between decimal and binary.

    Running the Algorithm

    • Examples are provided for converting decimal to binary.

    Conversion from Base 2 to base 10

    • Methods for converting base-2 to base-10 are explained, step-by-step.

    Converting decimal fractions to binary

    • Steps involved to convert a decimal fraction to binary

    Octal Numbering System

    • Octal is base eight, using digits 0-7
    • Octal numbers can be easily converted to binary and vice-versa

    Conversion table for Octal System

    • Table showing decimal, binary, and octal values.

    The digit position in octal form

    • Explaining the place values for the octal system

    Converting from octal to decimal and vice versa illustrated

    • Examples are provided.

    Converting from base 8 (octal) to base 10 (decimal) explained step-by-step

    • Examples shown and explained.

    Converting from 24.6 to binary

    • The steps for converting the mixed decimal numbers to binary format are provided.

    Hexadecimal Notation

    • Representing each 4 bits by a single symbol (0-9, A-F)

    Decimal to Hexadecimal conversion

    • Showing how to convert decimal numbers to hexadecimal.

    Hexadecimal to decimal conversion

    • Showing how to convert hexadecimal to decimal

    Hexadecimal to binary conversion

    • Showing how to convert hexadecimal to binary

    Binary to Decimal conversion

    • Converting binary values to base 10

    Hexadecimal to binary conversion.

    • Examples provided and explained in detail

    Binary Number Calculations

    • Addition, Subtraction, Multiplication, division.

    Computer Arithmetic

    • Arithmetic and logic unit (ALU)
    • Use addition and shifting operations.
    • Example demonstrating addition and subtraction.
    • Binary calculation examples.

    Overflow Condition

    • The concept of overflow.
    • Adding or subtracting numbers beyond the capacity of the system.

    One's and Two's Complement

    • Method of representing negative numbers in binary.
    • Steps to perform using one's and two's complement

    Real-time, Batch, Time-Sharing, Centralized, Distributed Processing

    • Different data processing methods

    Multitasking

    • Switching between multiple programs to create the appearance of simultaneous execution

    Files and Records

    • Defining files, records, and different data types involved in files and records.

    Character Codes

    • Including digits (0-9), letters (A-Z), and symbols
    • Different code representations (BCD, ASCII, EBCDIC)
    • Examples and details on each code.

    BCD Representation

    • Binary coded decimal (BCD) technique
    • Representing decimal digits as groups of four bits
    • Example: 236 in BCD

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    Related Documents

    Data Representation PDF

    Description

    Test your knowledge on how computers represent and store data using binary, octal, and hexadecimal systems. This quiz covers types of data, their representation, and key concepts such as bits, bytes, and complements. Ideal for students learning about computer science fundamentals.

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