The document discusses parallel adders and subtractors. It describes a parallel binary adder as a circuit consisting of n full adders that adds n-bit binary numbers and outputs n sum bits and a carry bit, with the COUT of one full adder connected to the CIN of the next. It also mentions parallel binary adders for 2 and 4 bits, as well as a parallel binary subtractor.

1. • PARALLEL ADDER
• PARALLEL BINARY ADDER
• PARALLEL BINARY SUBTRACTOR
USSA IN
MOHAMED KAMIL H
1

2. Parallel adders
• A circuit, consisting of n full adders, that will
add n-bit binary numbers.
• The output consists of n sum bits and a carry
bit.
• COUT of one full adder is connected to CIN of the
next full adder.

3. Parallel Adders
3

4. Parallel Binary Adders

5. Parallel Binary Adders
• Two-bit parallel binary adder

6. Parallel Binary Adders
• Four-bit parallel binary adder

7. Parallel Binary Subtractor
Parallel (ripple) binary subtractor
1/2550 A. Yaicharoen 7

8. Parallel Binary Adder/Subtractor
1/2550 A. Yaicharoen 8