Digital Electronics-Digital Arithmetic Operations and Circuits

Digital Electronics-Digital Arithmetic Operations and Circuits
51. Why is a fast-look-ahead carry circuit used in the 7483 4-bit full-adder?
  • to decrease the cost
  • to make it smaller
  • to slow down the circuit
  • to speed up the circuit
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52. Find the 2's complement of –1101102.
  • 1101002
  • 1010102
  • 0010012
  • 0010102
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53. What logic function is the sum output of a half-adder?
  • AND
  • exclusive-OR
  • exclusive-NOR
  • NAND
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54. The binary adder circuit is designed to add ________ binary numbers at the same time.
  • 2
  • 4
  • 6
  • 8
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55. An ALU is a multipurpose device capable of providing several different logic operations.
  • TRUE
  • FALSE
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56. BCD arithmetic is performed using base 10 numbers.
  • TRUE
  • FALSE
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57. A full adder has a carry-in.
  • TRUE
  • FALSE
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58. Hexadecimal is a base 4 numbering system.
  • TRUE
  • FALSE
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59. A binary sum is made up of only 1s and 0s.
  • TRUE
  • FALSE
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60. Overflow indicators in ALU circuits indicate when add or subtract operations produce results that are too large to fit into four bits.
  • TRUE
  • FALSE
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Digital Electronics
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