Difference between SOP and POS in Digital Logic
| S.No. | SOP | POS |
|---|---|---|
| 1. | A way of representing Boolean expressions as sum of product terms. | A way of representing Boolean expressions as product of sum terms. |
| 2. | SOP uses minterms. Minterm is product of Boolean variables either in normal form or complemented form. | POS uses maxterms. Maxterm is sum of Boolean variables either in normal form or complemented form. |
| 3. | It is sum of minterms. Minterms are represented as ‘m’ | It is product of maxterms. Maxterms are represented as ‘M’ |
| 4. | SOP is formed by considering all the minterms, whose output is HIGH(1) | POS is formed by considering all the maxterms, whose output is LOW(0) |
| 5. | While writing minterms for SOP, input with value 1 is considered as the variable itself and input with value 0 is considered as complement of the input. | While writing maxterms for POS, input with value 1 is considered as the complement and input with value 0 is considered as the variable itself. |
Difference between SOP and POS in Digital Logic
In digital logic, the inputs and output of a function are in the form of binary numbers (Boolean values) i.e., the values are either zero (0) or one (1). Therefore, digital logic is also known as ‘Boolean logic’. These inputs and output can be termed as ‘Boolean Variables’. The output Boolean variable of a digital signal can be expressed in terms of input Boolean variables which forms the ‘Boolean Expression’.
Table of Content
- SOP Vs POS
- What is SOP?
- What is POS?
- Differences
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