Subject
Computer Science
Topic
Computer Hardware
What does a 'full-adder' circuit do that a 'half-adder' cannot?
What does a 'full-adder' circuit do that a 'half-adder' cannot?
a)
It can subtract binary numbers.b)
It can handle a carry-in from a previous, less significant bit addition.c)
It can add 4-bit numbers directly.d)
It operates faster than a half-adder.Explanation
A full-adder has three inputs (A, B, and Cin) and two outputs (Sum and Cout). This ability to accept a carry-in (Cin) is essential for cascading adders together to add multi-bit numbers. For instance, to add two 8-bit numbers, you would need 8 full-adders chained together.Related questions
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