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Binary Subtraction using One's Complement Video Lecture | Digital Electronics - Electrical Engineering (EE)

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FAQs on Binary Subtraction using One's Complement Video Lecture - Digital Electronics - Electrical Engineering (EE)

1. What is binary subtraction using one's complement?
Ans. Binary subtraction using one's complement is a technique used to subtract binary numbers by complementing the subtrahend (the number being subtracted) and adding it to the minuend (the number from which subtraction is done). It involves taking the one's complement of the subtrahend, adding it to the minuend, and then adjusting the result if necessary.
2. How does one's complement work in binary subtraction?
Ans. In binary subtraction using one's complement, the subtrahend is first converted to its one's complement by changing all the 0s to 1s and vice versa. Then, this one's complement is added to the minuend using binary addition. If there is a carry generated during the addition, it is added back to the result. This technique simplifies subtraction as it allows the use of only addition operations.
3. What is the advantage of using one's complement in binary subtraction?
Ans. One advantage of using one's complement in binary subtraction is that it eliminates the need for a separate subtraction operation. By converting the subtrahend to its one's complement and performing binary addition, the subtraction can be done using the same addition operation. This simplifies the computation and reduces the complexity of the subtraction process.
4. Are there any limitations or drawbacks of binary subtraction using one's complement?
Ans. Yes, there are limitations to binary subtraction using one's complement. One limitation is the presence of a carry during addition, which needs to be carefully accounted for. If a carry is generated, it is added back to the result, and an extra step is required to adjust the final result. Additionally, this technique is not suitable for performing subtraction involving signed numbers, as it does not consider the sign bit.
5. Can you provide an example of binary subtraction using one's complement?
Ans. Sure! Let's consider the subtraction of two binary numbers: 10110 (minuend) and 01101 (subtrahend). To perform binary subtraction using one's complement, we first convert the subtrahend to its one's complement, which becomes 10010. Then, we add this one's complement to the minuend, resulting in 110000. Since a carry is generated during the addition, we add it back to the result, giving us the final answer of 110001.
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