n-bit parallel Adders and Subtractors

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Across
  1. 2. Adder circuit that adds two n-bit binary numbers.
  2. 4. The signal that indicates a 'borrow' in subtraction, analogous to carry in addition.
  3. 8. Adder Circuit that adds two BCD Numbers
  4. 9. The process where a carry moves through each stage of an adder.
  5. 10. A faster type of adder that overcomes the delay of the ripple carry adder.
  6. 11. A circuit that adds three bits and outputs a sum and carry
  7. 14. A circuit that subtracts two bits and outputs a difference and borrow.
Down
  1. 1. A circuit that computes the difference between two binary numbers.
  2. 3. The bit in two's complement representation that indicates the sign of the number.
  3. 5. The type of adder where the carry output of one full adder is the carry input of the next
  4. 6. The output that represents the subtraction of two bits in a subtractor.
  5. 7. A circuit that adds two single bits and gives a sum and carry
  6. 12. An adder that processes multiple bits simultaneously.
  7. 13. The output that represents the addition of two bits in an adder.
  8. 15. The method used to represent negative numbers in binary arithmetic.