SOP vs POS in Digital Logic: Difference between SOP and POS in Digital Logic
The major difference between SOP and POS is that the SOP represents a Boolean expression through minterms, while POS defines a Boolean expression through max terms.
What is SOP?
SOP stands for Sum of Product. SOP form is a set of product(AND) terms that are summed(OR) together. When an expression or term is represented in a sum of binary terms known as minterms and sum of products.
What is POS?
POS stands for product of sum. A technique of explaining a Boolean expression through a set of max terms or sum terms, is known as POS(product of sum).
Difference between SOP and POS in Digital Logic
| S.No. | SOP | POS |
| 1 | SOP stands for Sum of Products. | POS stands for Product of Sums. |
| 2 | It is a technique of defining the boolean terms as the sum of product terms. | It is a technique of defining boolean terms as a product of sum terms. |
| 3 | It prefers minterms. | It prefers maxterms. |
| 4 | In the case of SOP, the minterms are defined as ‘m’. | In the case of POS, the Maxterms are defined as ‘M’ |
| 5 | It gives HIGH(1) output. | It gives LOW(0) output. |
| 6 | In SOP, we can get the final term by adding the product terms. | In POS, we can get the final term by multiplying the sum terms. |
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