What is Boolean logic?
Sequences of instructions for a computer. use simple comparisons to help make decisions. A form of logical algebra which works only with two values, true or false. is a form of algebra where all A numerical amount denoted by a specific term, eg the value of x is 10. are either true or false. These values of true and false are used to test the In computing, this is a statement or sum that is either true or false. A computation depends on whether a condition equates to true or false. that A decision within a computer program when the program decides to move on based on the results of an event. and In computer programming, this is a single pass through a set of instructions. are based around.
Boolean logic uses algebra and algebraic expressions. Use these expressions in algorithms and programs:
| Expression | Boolean equivalent |
| Equals | = |
| Greater than | > |
| Less than | < |
| Greater than or equal to | >= |
| Less than or equal to | <= |
| Does not equal | <> |
| And | AND |
| Or | OR |
| Not | NOT |
| Expression | Equals |
|---|---|
| Boolean equivalent | = |
| Expression | Greater than |
|---|---|
| Boolean equivalent | > |
| Expression | Less than |
|---|---|
| Boolean equivalent | < |
| Expression | Greater than or equal to |
|---|---|
| Boolean equivalent | >= |
| Expression | Less than or equal to |
|---|---|
| Boolean equivalent | <= |
| Expression | Does not equal |
|---|---|
| Boolean equivalent | <> |
| Expression | And |
|---|---|
| Boolean equivalent | AND |
| Expression | Or |
|---|---|
| Boolean equivalent | OR |
| Expression | Not |
|---|---|
| Boolean equivalent | NOT |
Most programming languages use these equivalent Boolean expressions. However, some, such as A high-level programming language., have slightly different equivalents:
| Expression | Boolean equivalent | In Python |
| Equal to | = | == |
| Does not equal | <> | != |
| And | AND | and |
| Or | OR | or |
| Not | NOT | not |
| Expression | Equal to |
|---|---|
| Boolean equivalent | = |
| In Python | == |
| Expression | Does not equal |
|---|---|
| Boolean equivalent | <> |
| In Python | != |
| Expression | And |
|---|---|
| Boolean equivalent | AND |
| In Python | and |
| Expression | Or |
|---|---|
| Boolean equivalent | OR |
| In Python | or |
| Expression | Not |
|---|---|
| Boolean equivalent | NOT |
| In Python | not |
