Digital Electronics-Number Systems and Codes

Digital Electronics-Number Systems and Codes
61. The binary number 101110101111010 can be written in octal as ________.
  • 515628
  • 565778
  • 656278
  • 565728
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62. Convert 45710 to hexadecimal.
  • 711
  • 2C7
  • 811
  • 1C9
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63. Convert the decimal number 151.75 to binary.
  • 10000111.11
  • 11010011.01
  • 00111100.00
  • 10010111.11
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64. Convert the following octal number to binary.
1048
  • 0010001002
  • 1000000012
  • 00101002
  • 10000012
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65. 3428 is the decimal value for which of the following binary-coded decimal (BCD) groupings?
  • 11010001001000
  • 11010000101000
  • 011010010000010
  • 110100001101010
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66. The binary-coded decimal (BCD) system can be used to represent each of the 10 decimal digits as a(n):
  • 4-bit binary code
  • 8-bit binary code
  • 16-bit binary code
  • ASCII code
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67. The decimal number 18 is equal to the binary number ________.
  • 11110
  • 10001
  • 10010
  • 1111000
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68. The 2's complement of 11100111 is ________.
  • 11100110
  • 00011001
  • 00011000
  • 00011010
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69. Convert the following decimal number to BCD.
469
  • 100101101000
  • 010001101001
  • 100001101001
  • 100101100100
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70. Express the decimal number –37 as an 8-bit number in sign-magnitude.
  • 10100101
  • 00100101
  • 11011000
  • 11010001
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Digital Electronics
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