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**Boolean operators**

A Boolean data type is a binary variable that can have one of two possible values, 0 (False) or 1 (True). We can combine Booleans using Boolean operators AND, OR, NOT.

**Order of operations**

The rules of programming follow the same rules as maths in terms of the order in which operators are carried out.

They follow the rules of BODMAS:

**BRACKETS/ORDERS/DIVIDE/MULTIPLY/ADD/SUBTRACT**

Operators in brackets are carried out first, then orders like powers and roots, then division, multiplication, addition and, finally, subtraction.

For example, Order of Operations in programming a Celsius to Fahrenheit conversion:

**-celsius = float(input('Enter temperature celsius: '))**

**-fahrenheit = celsius * 9/5 + 32**

**-print(str(celsius) + ' = ' + str(fahrenheit))**

**Line 1:** The user is asked to input a value. This value is stored in the Celsius variable as a float.

**Line 2:** BODMAS – Division (9/5 = 1.8), Multiplication (1.8 * Celsius), Addition (+32).

**Line 3:** Program outputs the temperature in Celsius and Fahrenheit.

Operator |
Name and description |
Example |
---|---|---|

AND | Both operands (inputs) need to be True for the result to be True | a = 5, b = 6: a > 3 AND b > 3 = True |

OR | If either or both of the operands are true then the result will be True | a = 5, b = 6: a >= 6 OR b >=6 = True |

NOT | The result will be the opposite of the operand given | a = False, NOT a = True |

== | Is equal to – the left operand is equal to the right |
2 == 2 would be True |

<> or != | Is not equal to – the two operands are not equal |
2 != 1 would be True |

< | Is less than – the left operand is less than the right |

**Bitwise Operators**

The *bitwise *operators are similar to the logical operators, except that they work on a smaller scale -- binary representations of data.

Bitwise AND of 4-bit integers (below)

**The following operators are available:**

`op1 & op2`-- The AND operator compares two bits and generates a result of 1 if both bits are 1; otherwise, it returns 0.`op1`|`op2`-- The OR operator compares two bits and returns 1 if either or both of the bits are 1 and it gives 0 if both bits are 0.`op1`*^*`op2`-- The EXCLUSIVE-OR operator compares two bits and generates a result of 1 if the bits are complementary; otherwise, it returns 0.`~`

`op1`-- The COMPLEMENT operator is used to invert all of the bits of the operand.`op1 >> op2`-- The SHIFT RIGHT operator moves the bits to the right, discards the far right bit, and assigns the leftmost bit a value of 0.

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