Two half adders can be combined to form a full adder with no additional gates.

More Questions from Arithmetic Operations and Circuits

• A technique to speed parallel addition by eliminating the delay caused by the carry bit propagation is called fast carry, or look-ahead carry.
• Signed binary numbers have one bit that represents the sign, with the remaining bits representing the magnitude.
• If you borrow from a position that contains a 0, you must borrow from the more significant bit that contains a 1. All 0s up to that point become 1s, and the digit last borrowed from becomes a 0.
• Using the two's complement number system we can add numbers with like signs and obtain the correct result.
• End around carry is an operation in 1's complement subtraction where a 1 is added to the sum of the 1's complement of both numbers.
• A full adder adds three bits, a half adder adds 1-1/2 bits.
• The operands in a subtraction operation are the subend and the minuend.
• The operands in an addition operation consist of the augend and the addend.
• The 2's complement of 1101102 is _________.
• A full adder adds ____.

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