There are three basic logical operations in logical algebra: AND, or NAND. It is an algebra that operates according to a certain logical relationship, and it is a mathematical tool used to analyze and design digital circuits. In addition, the logical AND operation of logical variables is called AND term, and the logical OR operation of AND term constitutes the AND or formula of logical function, also called product sum.

There are three basic logical operations:

1) The logical AND- is represented by AB: when both A and B are 1, its value is 1, otherwise it is zero;

2) The logical OR- is represented by A+B: when both A and B are 0, its value is 0, otherwise it is1;

3) Logical negation-use "?" About A. It means that when A=0, the negation of A is 1, and when A= 1, the negation of A is 0.

Extended data:

The basic formulas and rules of logical algebra can be used to transform logical functions, thus obtaining the simplest expression form. The simplest form here refers to the simplest and or or the simplest or and, and there are two criteria for judging them: the least number of items; In the case of the least number of items, the text in the item is the least.

Karnaugh map is formed according to certain laws. It is precisely because of these laws that many characteristics of logical algebra are vividly and intuitively reflected in graphics, thus becoming a powerful tool for formula proof and function simplification.

References:

Baidu encyclopedia-logic algebra