Question
Download Solution PDFThe combination of two half adders is a ________.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFHalf adder
The half adder is a type of combinational logic circuit that adds two 1-bit binary numbers.
It generates the carry and sum of both inputs.
|
A |
B |
Sum |
Carry |
|
0 |
0 |
0 |
0 |
|
0 |
1 |
1 |
0 |
|
1 |
0 |
1 |
0 |
|
1 |
1 |
0 |
1 |
Sum = A ⊗ B
Carry = AB
Full adder
The full adder is a type of combinational logic circuit that adds three 1-bit binary numbers.
The full adder is the combination of two half adders.
|
A |
B |
Cin |
Sum |
Cout |
|
0 |
0 |
0 |
0 |
0 |
|
0 |
0 |
1 |
1 |
0 |
|
0 |
1 |
0 |
1 |
0 |
|
0 |
1 |
1 |
0 |
1 |
|
1 |
0 |
0 |
1 |
0 |
|
1 |
0 |
1 |
0 |
1 |
|
1 |
1 |
0 |
0 |
1 |
|
1 |
1 |
1 |
1 |
1 |
Sum = A ⊗ B ⊗ Cin
Cout = AB + BCin + CinA
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