In addition to the need to minimize algebraic expressions, there is sometimes the requirement to put an expression in a certain format, such as SOP, sum of minterms, POS, or product of maxterms. Secondly, to meet design constraints, we sometimes must manipulate the algebra. In this section we will look at some examples and introduce one more property. If we have an SOP expression and need to expand it to sum of minterms, we have two options. First, we can create a truth table, and, from that, follow the approach of Section 2.5 to produce a sum of minterms. Indeed, this approach will work for an expression in any format. The other approach is to use P9a to add variables to a term.
In addition to the need to minimize algebraic expressions, there is sometimes the requirement to put an expression in a certain format, such as SOP, sum of minterms, POS, or product of maxterms. Secondly, to meet design constraints, we sometimes must manipulate the algebra. In this section we will look at some examples and introduce one more property. If we have an SOP expression and need to expand it to sum of minterms, we have two options. First, we can create a truth table, and, from that, follow the approach of Section 2.5 to produce a sum of minterms. Indeed, this approach will work for an expression in any format. The other approach is to use P9a to add variables to a term.
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