Sum of products Also known as the normal sum function. Product of sums Also known as the normal product function. A term such as etc. A term such as etc. The truth table is useful in that it can be used to verify Boolean identities.
Adjacent cells Consider the following map.
Referring to the map we can encircle the adjacent cells and infer that A and are not required. It is an implicant of a function which does not imply any other implicant of the function. The chart is used to remove redundant prime implicants. A grid is prepared having all the prime implicants listed down the left and all the minterms of the function along the top. Each minterm covered by a given prime implicant is marked in the appropiate postion.